Beer has its own language, and half of it sounds made up until someone explains it. This is our full A-Z beer glossary – every term in one place, in plain English, with our own reviews, recipes and calculators linked in wherever a term shows up in something we have actually tasted or built.
New to craft beer? Start here
These terms cover most of what you will run into on a beer label or a brewery menu.
| Term | Plain-English meaning |
|---|---|
| ABV | How strong the beer is – the percent of the drink that is pure alcohol. |
| Ale | Beer made with a yeast that ferments fast, warm, and often fruity. |
| Craft Beer | Beer from a small, independent brewery, not a beer megacorp. |
| Draft / Draught | Beer poured straight from a keg or cask, not a bottle or can. |
| Dry Hopping | Adding hops after the boil purely for smell, not bitterness. |
| Fermentation | The process where yeast turns sugar into alcohol – the step that makes beer, beer. |
| Fruit Beer | Beer brewed with real fruit added to the mix. |
| Barrel-Aged | Beer rested in a used wine or whiskey barrel to pick up its flavor. |
| Cask Ale | Unfiltered pub beer that carbonates naturally and is pulled by a hand pump. |
| Carbonation | The dissolved CO2 that gives beer its fizz and head. |
| IBU | A number showing how bitter a beer is from hops – higher usually means more bitter. |
| Lager | Beer made with a yeast that ferments slow and cold, for a cleaner, crisper taste. |
| Stout | A dark, roasty beer with coffee and chocolate flavors from heavily roasted malt. |
| Session Beer | A lower-alcohol beer built for drinking a few in one sitting. |
| Growler | A large refillable jug for carrying draft beer home. |
Jump to a letter
A
ABV (Alcohol By Volume)Numbers & Measurements
ABV tells you what percentage of a beer’s total volume is pure alcohol. A 12 oz beer at 5% ABV has less alcohol in it than the same size pour at 8%. Brewers get to this number by measuring the beer’s density before and after fermentation (original gravity minus final gravity) and running it through a formula. Most mainstream lagers sit around 4.5-5% ABV; hazy IPAs and imperial stouts can run 8% or higher.
AdjunctIngredients
An adjunct is any fermentable ingredient used in brewing besides malted barley – most commonly rice, corn, oats, wheat, or sugar. Adjuncts are not automatically a bad sign: some, like oats, add body and mouthfeel to a beer on purpose. Others, like rice and corn, are used in mass-market lagers to lighten the body and cut cost.
AleStyles
Ale is beer made with a top-fermenting yeast strain that works fast at warmer temperatures (roughly 60-72F). That warmer, quicker fermentation is what gives ales their characteristic fruity, sometimes spicy flavor compounds – a personality lagers do not have. Ale is a huge umbrella category, not one flavor.
- Pale Ale – light color, balanced malt and hop character
- IPA – hop-forward, more bitter and aromatic
- Brown Ale – malt-forward, nutty and toasty
- Belgian Ale – fruity, spicy yeast character from Belgian strains
Ale is one of the oldest words in the English language for a drink – it predates the word ‘beer’ itself in English, back when ‘beer’ specifically meant a hopped drink and ‘ale’ meant an unhopped one. The distinction faded centuries ago; today the words overlap.
American Pale Ale (APA)Styles
An American Pale Ale is a lighter-bodied pale ale built around American hop varieties like Cascade and Centennial, giving it citrus and pine notes without the heavy bitterness of an IPA. Think of it as the more sessionable, food-friendly cousin of an American IPA.
B
BarleywineStyles
Barleywine is a strong, malt-heavy ale, usually 8-12% ABV, despite having no grapes or wine in it at all – the name is a nod to its wine-strength alcohol, not its ingredients. Expect a thick, sticky-sweet body with notes of caramel, dried fruit, and sometimes booze warmth on the finish. It is meant to be sipped slowly, not chugged.
Barrel-AgedBrewing Process
A barrel-aged beer has spent time resting in a used wine, whiskey, bourbon, or rum barrel before packaging, picking up flavor and aroma compounds from the wood and whatever spirit lived there before it. It is most common with big, boozy styles like imperial stouts and barleywines because they can stand up to the extra intensity.
BeerBasics
Beer is a fermented alcoholic drink made from water, a starch source (almost always malted grain), yeast, and, in the vast majority of styles, hops. Yeast eats the sugars extracted from the grain and produces alcohol and carbon dioxide as byproducts. Every beer style on this page is a variation built from that same basic four-ingredient template.
Belgian AleStyles
Belgian ale is not one recipe but a family of styles defined by distinctive Belgian yeast strains that produce fruity esters (banana, pear) and spicy phenols (clove, pepper) even when no fruit or spice is added. Witbier, Dubbel, Tripel, and Belgian Strong Ale all fall under this umbrella.
BitterStyles
Bitter is the everyday English pub ale – copper-colored, low-to-moderate ABV (usually 3-4%), and built around English hop varieties for a earthy, floral bitterness rather than the punchy citrus of American hops. It is traditionally served cask-conditioned and only lightly chilled.
- Ordinary Bitter – the lightest, most sessionable version
- Best Bitter – slightly stronger, more hop character
- Extra Special Bitter (ESB) – the strongest of the three, see below
BockStyles · pronounced BOK
Bock is a strong, malty German lager, typically 6-7% ABV, with a smooth sweetness and little to no hop bitterness getting in the way. The name most likely traces back to the German town of Einbeck, though it also became linked with a goat mascot over the centuries – many bock labels still feature one.
Bock’s link to goats has nothing to do with the recipe. It is most likely a mistranslation: beer from Einbeck became ‘Einbecker’ in southern German dialects, which slid into ‘ein Bock’ – ‘a billy goat.’ The goat stuck around as the style’s unofficial mascot ever since.
Bottle ConditioningBrewing Process
Bottle conditioning is when a beer carbonates naturally inside its own sealed bottle, rather than being force-carbonated with a CO2 tank before packaging. Brewers add a small amount of sugar and fresh yeast at bottling time, and that second, slower fermentation builds the carbonation while also softening the flavor over time. It is why some bottle-conditioned beers actually improve if you let them sit for a few months.
BreweryIndustry
A brewery is any facility licensed to produce beer, from a multinational operation making millions of barrels a year down to a 3-barrel nanobrewery run out of a garage. Size does not determine quality – some of the best beer in this glossary’s reviews comes from tiny operations.
BrewpubIndustry
A brewpub is a restaurant or bar that brews its own beer on-site, usually selling most of it straight over its own bar rather than distributing to stores. It is the most common way most people first taste a truly fresh, unfiltered beer straight from the tank.
C
CarbonationNumbers & Measurements
Carbonation is the dissolved CO2 in beer that creates its fizz, head, and mouthfeel. It comes either naturally from fermentation (see Bottle Conditioning) or is added afterward by force-carbonating with a CO2 tank. Too little carbonation makes a beer taste flat and dull; too much makes it feel harsh and can trigger excessive foaming when poured.
Cask AleServing & Culture
Cask ale (also called ‘real ale’) is unfiltered, unpasteurized beer that finishes fermenting and carbonating naturally inside the cask it’s served from, then gets pulled by a hand pump rather than pushed out with CO2 pressure. It is served cooler than fridge temperature but warmer than a typical lager – closer to cellar temperature – and has a softer, gentler carbonation than keg beer.
CellaringServing & Culture
Cellaring is deliberately aging beer, usually a high-ABV style like barleywine or imperial stout, for months or years to let its flavors mellow and develop, the same way you might age a bottle of wine. Not every beer benefits from it – fresh, hop-forward styles like IPA actually get worse with age as their hop aroma fades, so cellaring is reserved for beers with the malt backbone and alcohol to hold up over time.
ConditioningBrewing Process
Conditioning is the resting period after primary fermentation where a beer’s flavors smooth out and its carbonation finishes developing. Rough, yeasty edges from active fermentation fade, and the beer’s true flavor comes into focus. Conditioning can happen in a bottle, a cask, a keg, or a brewery’s own conditioning tanks depending on the style.
Craft BeerIndustry
Craft beer generally means beer from a small, independent brewery that emphasizes traditional or innovative brewing over mass-market efficiency. The Brewers Association’s own definition caps craft breweries at 6 million barrels a year of production and requires majority independent ownership. In practice, most drinkers just use it to mean ‘not one of the handful of giant industrial lager brands.’
Cream AleStyles
Cream ale is a light-bodied, pale American ale style designed to drink like a lager – crisp, clean, and easy – despite being fermented with ale yeast, sometimes with a small amount of lager yeast blended in. It is one of the few genuinely American-invented beer styles.
D
DoppelbockStyles · pronounced DOP-el-bock
Doppelbock is a ‘double bock’ – a stronger, richer version of a standard bock, typically 7-10% ABV with deep caramel, toffee, and dark bread malt flavors. German Doppelbock names traditionally end in ‘-ator’ (a nod to the original, Paulaner’s Salvator), and most breweries making one since have kept up the tradition as a wink to drinkers who know the style.
Draft / DraughtServing & Culture
Draft (or draught) beer is beer served straight from a keg or cask rather than a bottle or can. Both spellings mean the same thing – ‘draught’ is the traditional British spelling, ‘draft’ the more common American one. Draft beer is typically fresher than packaged beer because it moves from brewery to tap faster and is not exposed to light the way a clear or green bottle can be.
Dry HoppingBrewing Process
Dry hopping means adding hops to beer after the boil, usually during or after fermentation, purely for aroma rather than bitterness. Because the hops are never boiled, none of their bitter compounds get extracted – you get the citrus, pine, and tropical fruit smell of hops without much added bitterness. It is the technique behind the huge, juicy nose on a modern hazy IPA.
DunkelStyles · pronounced DOON-kel
Dunkel is German for ‘dark’ and refers to a dark Bavarian lager with a smooth, bready, lightly toasted malt character but almost no roasted or burnt bitterness – unlike a stout or porter. It is a good entry point for lager drinkers who want more flavor without more hop bitterness.
E
ESB (Extra Special Bitter)Styles
ESB is the strongest member of the English Bitter family, usually 5-5.5% ABV with a fuller malt backbone and more pronounced hop character than an ordinary or best bitter, while staying balanced rather than aggressively hoppy. Fuller’s ESB is the style’s most famous commercial example.
EisbockStyles · pronounced ICE-bock
Eisbock is made by partially freezing a finished doppelbock and removing the ice, which concentrates the remaining beer’s alcohol and flavor – water freezes before alcohol does, so pulling out ice crystals leaves a smaller, stronger, more intense beer behind. The result can run 9-14% ABV with a thick, almost liqueur-like body.
Estery / EstersTasting & Flavor
Esters are fruity aroma compounds produced naturally by yeast during fermentation – common ones taste and smell like banana, pear, apple, or bubblegum. Warmer fermentation temperatures generally produce more esters, which is a big part of why ales (fermented warm) tend to taste fruitier than lagers (fermented cold).
F
FermentationBrewing Process
Fermentation is the process where yeast consumes the sugars in wort and converts them into alcohol and carbon dioxide. It is the single step that turns sweet, non-alcoholic wort into beer. Ale fermentation runs warmer and faster (days); lager fermentation runs colder and slower (weeks).
- Primary fermentation – the fast, active phase where most alcohol is produced
- Secondary fermentation / conditioning – a slower phase where flavors clean up and settle
Filtered / UnfilteredBrewing Process
Filtering removes leftover yeast and proteins from beer before packaging, producing a clear, bright-looking pour. Unfiltered beer skips that step, so it looks hazy or cloudy and often carries a slightly fuller mouthfeel and different flavor since some of that yeast character stays in the glass. Neither is objectively better – it’s a stylistic choice, and some styles (hazy IPA, witbier, hefeweizen) are meant to be unfiltered.
FinishTasting & Flavor
The finish is the flavor and sensation a beer leaves behind after you swallow – dry, sweet, bitter, warming, and so on. A ‘dry finish’ means little sweetness lingers; a ‘long finish’ means the flavor sticks around for a while after the sip.
FlightServing & Culture
A flight is a set of small beer samples, usually 4-6 pours of 4-5 oz each, served together so you can taste and compare several beers side by side. Most breweries and taprooms offer one as a low-commitment way to try more of what’s on tap without ordering a full pint of each.
Fruit BeerStyles
Fruit beer is any beer brewed with real fruit, fruit puree, or fruit juice added during or after fermentation, ranging from a subtle hint of raspberry in a wheat beer to fruit-forward sours built almost entirely around the fruit’s character. It spans nearly every base style – lagers, ales, and sours can all be made into a fruit beer.
G
Grain BillIngredients
The grain bill is the full list of malted (and sometimes unmalted) grains used in a beer recipe, and the ratio between them. A simple pale ale might use one base malt; a stout’s grain bill can stack six or more specialty malts for color, body, and roast character.
Gravity (Original / Final)Numbers & Measurements
Gravity measures how much sugar is dissolved in a beer’s liquid, before and after fermentation. Original gravity (OG) is the reading before yeast is added; final gravity (FG) is the reading once fermentation is done. The gap between the two is what tells a brewer how much sugar the yeast actually ate, which is the basis for the ABV formula.
GrowlerServing & Culture
A growler is a large refillable jug, usually 32 or 64 oz, used to carry draft beer home from a brewery or taproom. It is meant to be drunk within a day or two of filling since it is not sealed to the same standard as a bottle or can, and it loses freshness fast once opened.
GoseStyles · pronounced GOH-zuh
Gose is a tart, lightly sour German wheat beer brewed with salt and coriander, which sounds like an odd combination until you taste how it turns into a clean, refreshing, almost briny sourness. It nearly died out entirely in the 20th century before American craft brewers revived it.
Gose was on the edge of extinction by the mid-20th century, down to a single brewery keeping it alive in Leipzig. American craft breweries, chasing something different from the usual IPA lineup, are a big part of why it is easy to find again today.
H
Haze / Hazy IPAStyles
A hazy IPA (also called New England IPA) is an IPA brewed to look cloudy on purpose, using wheat or oats, minimal filtering, and yeast strains that stay in suspension. The tradeoff for that soft, juice-like appearance and mouthfeel is a shorter shelf life – hazy IPAs fade faster than clear, filtered ones.
HeadTasting & Flavor
The head is the foam that sits on top of a poured beer, made of tiny bubbles of the beer’s carbonation trapped by proteins from the malt. A tall, long-lasting head usually signals a clean glass and a well-carbonated beer; a head that vanishes in seconds can mean leftover detergent residue or a beer that has gone flat.
HefeweizenStyles · pronounced HAY-fuh-vite-sen
Hefeweizen is a German wheat beer that gets its signature banana-and-clove flavor entirely from its yeast strain, not from any added fruit or spice. It is traditionally served unfiltered and cloudy, with the yeast (hefe means ‘yeast’ in German) still in the glass.
HomebrewingIndustry
Homebrewing is making beer at home in small batches, usually 1-5 gallons at a time, for personal drinking rather than sale. It has been legal in the US since 1978 and is where a large share of today’s professional brewers got their start.
Honey BeerStyles
Honey beer is any beer brewed with honey added to the boil or fermenter, which honey yeast happily ferments out almost completely – so it usually adds a dry, slightly floral character and a small ABV boost rather than sweetness.
HopIngredients
Hops are the flower cones of the Humulus lupulus plant, added to beer for bitterness, flavor, and aroma, and as a natural preservative. Different varieties bring wildly different character, from earthy English hops to the citrus and pine of American Pacific Northwest hops to tropical fruit from newer Australian and New Zealand varieties.
I
IBU (International Bitterness Units)Numbers & Measurements
IBU measures the concentration of bittering compounds from hops in a beer, on a scale that runs roughly from 5 to over 100. A light lager might sit around 10 IBU; a double IPA can run 80-100+. IBU is not the whole bitterness story though – a beer’s malt sweetness can mask a high IBU number, which is why two beers with the same IBU can taste very differently bitter.
ImperialStyles
‘Imperial’ in a beer name means a stronger, more intense version of a base style – an Imperial Stout is a bigger, boozier stout, an Imperial IPA a bigger, boozier IPA. The term dates back to strong stouts brewed in England for export to the Russian Imperial court in the 1800s.
IPA (India Pale Ale)Styles
IPA is a hop-forward pale ale style, historically brewed extra hoppy (hops act as a preservative) for the long sea voyage from England to India. Modern IPA has splintered into dozens of sub-styles – West Coast, hazy/New England, session, double/imperial, black IPA – but all of them share that hop-first identity.
J
Jockey BoxServing & Culture
A jockey box is a portable draft beer dispensing system – a cooler packed with ice, coiled cold plate lines, and a tap – used to serve properly cold draft beer at festivals, backyard parties, or anywhere without a permanent tap system. Beer runs from a keg through the coiled lines inside the ice-packed cooler and comes out the other end chilled, even in summer heat.
K
KegServing & Culture
A keg is a sealed, pressurized metal container used to store and dispense draft beer. Standard US kegs (half-barrels) hold about 15.5 gallons, or roughly 165 twelve-ounce pours – though smaller ‘sixth-barrel’ and ‘quarter-barrel’ kegs are common for bars and events with less turnover.
KettleBrewing Process
The kettle (or ‘copper’, in older British terminology) is the vessel where wort is boiled with hops before fermentation. The boil sterilizes the wort, extracts bitterness and flavor from the hops, and drives off unwanted compounds – it is one of the few genuinely non-negotiable steps in brewing any beer style.
KolschStyles · pronounced KOLSH
Kolsch is a light, crisp, pale ale from Cologne, Germany, fermented with ale yeast but then cold-conditioned like a lager – splitting the difference between the two categories. Legally, only beer brewed within Cologne’s city limits under a strict local agreement can be labeled ‘Kolsch’; everything else has to call itself a ‘Kolsch-style ale.’
Cologne’s brewers take the Kolsch name seriously enough that it is legally protected under an agreement (the Kolsch Konvention) among the city’s breweries, similar to how Champagne only means something from Champagne, France.
KrausenBrewing Process · pronounced KROY-zen
Krausen is the thick, rocky foam that forms on top of fermenting beer during the most active phase of fermentation. Brewers watch it rise and fall as a visual signal of how fermentation is progressing – a tall krausen means the yeast is working hard.
L
LacingTasting & Flavor
Lacing is the pattern of foam left clinging to the inside of a glass as you drink a beer down. Good lacing is a sign of a clean glass and a beer with enough protein and carbonation to hold a stable head – bartenders and homebrewers alike take some pride in a well-laced glass.
LagerStyles
Lager is beer made with a bottom-fermenting yeast strain that works slowly at cold temperatures (roughly 45-55F), then gets cold-conditioned for weeks afterward. That slow, cold process produces a cleaner, crisper flavor than ale, with less of the fruity ester character – it is the other half of beer’s two big yeast families, alongside ale.
LambicStyles
Lambic is a Belgian sour beer fermented spontaneously by wild yeast and bacteria floating in the air of the brewery, rather than a cultivated yeast strain pitched by the brewer. It is traditionally aged in wooden barrels for one to three years and often blended with fruit like cherries (kriek) or raspberries (framboise).
LauteringBrewing Process · pronounced LAW-ter-ing
Lautering is the step where sugary liquid (wort) is separated from the leftover grain solids after mashing. The grain bed itself acts as a natural filter as hot water is sparged (rinsed) through it, extracting the last of the fermentable sugars before the grain is discarded.
Light BeerStyles
Light beer is a lower-calorie, lower-carb version of a standard lager, made by using more fermentable adjuncts (like rice or corn) and less malt, so more of the sugar converts to alcohol and CO2 instead of staying behind as body and calories. It is a US-driven category more than a global brewing tradition.
M
MaltIngredients
Malt is grain, almost always barley, that has been soaked, allowed to sprout, then dried and lightly roasted. That process (malting) unlocks the enzymes needed to convert the grain’s starch into fermentable sugar, and the roast level determines the color and flavor a malt contributes, from pale straw to deep coffee-black.
MashBrewing Process
Mashing is soaking crushed malt in hot water for around an hour, which activates enzymes that convert the grain’s starches into fermentable sugars. The result is a sweet liquid called wort. Mash temperature is one of the biggest levers a brewer has: lower mash temps produce a drier, more fermentable beer, higher temps leave more body and sweetness behind.
MicrobreweryIndustry
A microbrewery is a small brewery, traditionally defined as producing under 15,000 barrels a year, that sells most of its beer off-site rather than at its own bar. It is one of several overlapping size categories alongside nanobrewery, brewpub, and regional craft brewery.
Milk StoutStyles
Milk stout (also called sweet stout) is a stout brewed with lactose, a sugar that regular brewer’s yeast cannot ferment. Because the lactose stays behind unfermented, it leaves the finished beer noticeably sweeter and fuller-bodied than a dry stout.
MouthfeelTasting & Flavor
Mouthfeel is the physical sensation of a beer in your mouth, separate from its taste or smell – how thick or thin, how creamy or watery, how much carbonation prickle it has. Words like ‘full-bodied,’ ‘crisp,’ and ‘silky’ are all describing mouthfeel, not flavor.
N
Nano BreweryIndustry
A nanobrewery is an especially small brewery, typically producing under 500-1,000 barrels a year, often run out of a small commercial space or even a garage. It is the entry point many professional brewers use before scaling up to a full microbrewery.
NitroServing & Culture
Nitro beer is dispensed using a gas blend of mostly nitrogen instead of straight CO2, which produces much smaller bubbles and that trademark thick, cascading, creamy pour. Guinness Draught is the style’s most famous example.
O
Oatmeal StoutStyles
Oatmeal stout is a stout brewed with a portion of oats added to the grain bill, which gives it a noticeably silkier, fuller mouthfeel than a standard dry stout without adding much extra sweetness.
Off-FlavorTasting & Flavor
An off-flavor is any taste or aroma in a beer that was not intended by the brewer – common ones include a wet-cardboard taste from oxidation, a butterscotch note from diacetyl, or a skunky smell from light exposure. Spotting off-flavors is a core skill in professional beer judging and quality control.
OxidationBrewing Process
Oxidation happens when beer is exposed to oxygen after fermentation, which breaks down its flavor compounds over time and produces a stale, wet-cardboard or sherry-like off-flavor. It is one of the main reasons packaged beer is best drunk fresh rather than left to sit for months, especially hop-forward styles like IPA.
P
PasteurizationBrewing Process
Pasteurization is briefly heating packaged beer to kill off any remaining yeast or bacteria, extending its shelf life. It is standard for most mass-market beer but skipped by many craft breweries, who rely on refrigeration and faster turnover instead to protect flavor.
PilsnerStyles
Pilsner is a pale, crisp lager style that originated in Pilsen, in what is now the Czech Republic, in 1842 – it was the first clear golden beer of its kind and became the template most of the world’s mass-market lagers still copy today. Traditional Czech pilsners lean maltier and more herbal from Saaz hops; German pilsners are drier and more sharply bitter.
PorterStyles
Porter is a dark ale built on roasted malts, giving it chocolate and coffee notes without the sharp, burnt bitterness of a stout. Historically porter and stout were closely related – ‘stout’ originally just meant a stronger porter – and the line between the two styles is still genuinely blurry today.
Pitching (Yeast)Brewing Process
Pitching is adding yeast to cooled wort to start fermentation. Pitching the right amount of healthy yeast at the right temperature is one of the biggest factors in how clean or how fruity/estery the finished beer turns out – too little yeast and fermentation stresses out and throws off flavors.
Q
QuadrupelStyles
Quadrupel (or ‘Quad’) is the strongest of the classic Belgian Trappist ale styles, typically 9-12% ABV, with deep dark fruit, caramel, and booze warmth. The name follows the same convention as Belgian Dubbel and Tripel – a rough historical shorthand for strength, not a literal ingredient ratio.
R
RauchbierStyles · pronounced ROWKH-beer
Rauchbier is German for ‘smoke beer’ – a lager brewed with malt dried over an open flame instead of hot air, giving the finished beer a distinct smoky, almost bacon-like character. It is a specialty of Bamberg, Germany, where it has been brewed for centuries.
ReinheitsgebotHistory & Law · pronounced RINE-hites-guh-boat
The Reinheitsgebot is a Bavarian beer purity law from 1516 that originally limited beer ingredients to just water, barley, and hops (yeast was not yet understood and was added later). It is one of the oldest food-safety regulations still referenced today, and many German breweries still market their beer as brewed ‘according to’ it, even though modern German food law has moved past its exact original wording.
Residual SugarNumbers & Measurements
Residual sugar is the sugar left in a beer after fermentation that the yeast did not convert into alcohol. It is the main driver of a beer’s perceived sweetness on the finish – a beer fermented down to a low final gravity will taste drier, while one with more residual sugar will taste fuller and sweeter.
S
SaisonStyles · pronounced say-ZOHN
Saison is a Belgian farmhouse ale, originally brewed by Wallonian farms in the cooler months to be drunk by field workers during the summer harvest. It is typically dry, peppery, and fruity, with a distinctive yeast character that can range from mild to quite funky and rustic depending on the strain.
Session BeerStyles
A session beer is any beer, typically under 5% ABV, built to be easy to drink several of in one sitting (a ‘session’) without getting overwhelmed by alcohol or intensity. The term applies across styles – there are session IPAs, session stouts, and session sours, not just one fixed recipe.
Sour BeerStyles
Sour beer is any beer intentionally soured using wild yeast, bacteria (usually Lactobacillus or Pediococcus), or a blend of both, rather than the clean, non-souring yeast strains used in most beer. Styles range from tart, quick-soured Berliner Weisse to complex, barrel-aged, years-in-the-making lambic.
SpargingBrewing Process
Sparging is rinsing the leftover grain bed with hot water during lautering to rinse out the last of its fermentable sugar. Done too fast or with water that is too hot, sparging can extract harsh tannins from the grain husks – one of the more common mistakes new homebrewers make.
StoutStyles
Stout is a dark, roasty ale built around heavily roasted malts, giving it coffee and dark chocolate flavors and usually a thick, creamy body. It splits into several distinct sub-styles – dry (Irish), imperial (Russian), oatmeal, and milk/sweet stout – each covered elsewhere in this glossary.
T
TanninTasting & Flavor
Tannins are astringent, mouth-drying compounds extracted from grain husks, hop material, or barrel wood. A small amount can add pleasant structure, especially in barrel-aged beers, but too much (usually from over-sparging with hot water) produces an unpleasant, puckering harshness.
TapServing & Culture
A tap (or faucet) is the valve a keg’s beer line runs to, which a bartender pulls or pushes to pour a draft beer. ‘On tap’ or ‘on draft’ both just mean the beer is available from a keg system rather than in a bottle or can.
TrappistStyles
Trappist is a legally protected label for beer brewed within the walls of a Trappist monastery, under the monks’ supervision, with profits going to the monastery or charity. Only a small number of breweries worldwide, mostly in Belgium, are certified to use it – it is a designation about who brews the beer and why, not a single flavor profile.
TripelStyles
Tripel is a strong, golden Belgian ale, typically 7.5-9.5% ABV, that hides its strength behind a deceptively light color and a dry, spicy, fruity finish. Like Dubbel and Quadrupel, the name is a rough historical strength marker rather than a literal recipe ratio.
U
Unmalted GrainIngredients
Unmalted grain is grain used in brewing that skipped the malting process entirely – common examples are flaked oats (for body), raw wheat (for haze and head retention), and roasted barley (for the sharp, coffee-like edge in a dry Irish stout). It is a specific type of adjunct, used deliberately for texture or flavor rather than just to cut cost.
V
Vienna LagerStyles
Vienna lager is an amber, malt-forward lager style developed in Vienna in the 1840s, built around toasty, lightly caramel Vienna malt with restrained hop bitterness. It nearly disappeared in its home country but survived and evolved abroad, most famously in Mexico, where Austrian brewers brought the style in the 1800s.
VintageServing & Culture
A beer’s vintage is the year it was brewed, usually printed on high-ABV bottles meant for cellaring, like barleywine or imperial stout. Unlike wine, vintage dating on beer is the exception rather than the rule – most beer is meant to be drunk fresh, not aged (see Cellaring).
W
Wheat BeerStyles
Wheat beer is any beer brewed with a substantial portion of wheat alongside (or instead of) barley malt, which adds a soft, sometimes bready body and helps produce a hazy pour and a stable, fluffy head. Hefeweizen and witbier are the two most common wheat beer traditions, German and Belgian respectively.
Wet HoppingBrewing Process
Wet hopping uses freshly picked hops, still full of their natural moisture, added to the brew within hours or days of harvest – rather than the dried, pelletized hops used the rest of the year. It is a short, seasonal window (usually late summer) that produces a brighter, greener, more vegetal hop character than dried hops can.
WortBrewing Process · pronounced WERT
Wort is the sweet, sugar-rich liquid extracted from mashed grain, before it has been fermented into beer. It is technically not beer yet – wort becomes beer only after yeast is pitched and fermentation converts its sugar into alcohol and CO2.
X
XanthohumolIngredients · pronounced zan-tho-HYOO-mol
Xanthohumol is a flavonoid compound found in hops, one of hundreds of chemical compounds hops contribute to beer beyond bitterness. It has drawn research interest for potential health properties, though only in concentrations far higher than what actually ends up in a pint – it is a brewing-science footnote more than a flavor descriptor drinkers would notice.
Y
YeastIngredients
Yeast is the single-celled fungus responsible for fermentation – it eats the sugar in wort and produces alcohol and CO2 as byproducts. The specific strain used is one of the single biggest flavor decisions in a beer’s whole recipe: it is the difference between ale and lager, and within ales, between a clean American strain and a fruity Belgian one.
Yorkshire SquareBrewing Process
A Yorkshire Square is a traditional two-tiered fermentation vessel, historically stone and now usually stainless steel, developed in Yorkshire, England. Its design naturally circulates yeast between the two chambers during fermentation, producing the distinctively rounded, mineral character associated with classic Yorkshire ales.
Z
ZwickelbierStyles · pronounced TSVIK-el-beer
Zwickelbier is unfiltered, unpasteurized beer drawn straight from a brewery’s conditioning tank through a small sampling valve called a zwickel – it is essentially a brewery letting you taste a beer before it has gone through its final packaging steps. It is typically only available at the brewery itself.
ZymurgyIndustry · pronounced zy-MUR-jee
Zymurgy is the branch of applied science that studies fermentation – the process yeast uses to make beer, wine, and other fermented products. The American Homebrewers Association’s flagship magazine is named after it, and the word shows up on plenty of homebrew club logos and t-shirts as a bit of brewing-nerd shorthand.
Beer styles A-Z, at a glance
A quick side-by-side of every style covered above.
| Style | Typical ABV | Typical IBU | Origin |
|---|---|---|---|
| Ale (general) | 4-8% | 10-60 | England / worldwide |
| American Pale Ale | 4.5-6% | 25-45 | United States |
| Barleywine | 8-12% | 35-70 | England |
| Bitter | 3-4% | 20-35 | England |
| ESB | 5-5.5% | 30-45 | England |
| Bock | 6-7% | 20-30 | Germany |
| Doppelbock | 7-10% | 17-27 | Germany |
| Eisbock | 9-14% | 20-30 | Germany |
| Cream Ale | 4.2-5.6% | 8-20 | United States |
| Gose | 4-4.5% | 5-12 | Germany |
| Hazy IPA | 6-8% | 40-70 | United States |
| Kolsch | 4.4-5.2% | 18-25 | Germany |
| Lager (general) | 4-6% | 5-30 | Germany / worldwide |
| Pilsner | 4.2-5.4% | 25-45 | Czech Republic / Germany |
| Quadrupel | 9-12% | 25-50 | Belgium |
| Rauchbier | 4.8-6% | 20-30 | Germany |
| Saison | 5-8.5% | 20-35 | Belgium |
| Stout (general) | 4-8% | 20-50 | Ireland / worldwide |
| Tripel | 7.5-9.5% | 20-40 | Belgium |
| Vienna Lager | 4.5-5.5% | 18-30 | Austria / Mexico |
