Question 1

How long does beer fermentation take?

Accepted Answer

Primary fermentation typically takes 3-14 days, depending on yeast strain, temperature, and original gravity. Ales ferment faster (3-7 days at 18-24°C/64-75°F), while lagers take longer (2-4 weeks at 8-14°C/46-57°F). Fermentation is complete when gravity remains stable for 2-3 days. Primary fermentation is often followed by a conditioning phase of 1-4 weeks.

Question 2

What is the difference between Ale and Lager?

Accepted Answer

The main difference is in the yeast: Ales use top-fermenting yeast at warmer temperatures (15-24°C/59-75°F) and often have fruitier flavors. Lagers use bottom-fermenting yeast at cooler temperatures (8-14°C/46-57°F) and require cold conditioning, resulting in a cleaner, crisper taste. Ales include IPA, Stout, Porter, Wheat. Lagers include Pilsner, Helles, Märzen, Bock.

Question 3

What does IBU mean in beer?

Accepted Answer

IBU stands for International Bitterness Units and measures beer bitterness. Higher IBU means more bitter beer. Typical values: Wheat Beer 10-15 IBU, Pilsner 25-45 IBU, Pale Ale 30-50 IBU, IPA 40-70+ IBU. Bitterness comes from alpha acids in hops that isomerize during boiling. Perceived bitterness also depends on residual sweetness – a sweeter beer tastes less bitter at the same IBU. 👉 Calculate your hop bitterness with our free [IBU Calculator](/rechner/ibu-rechner).

Question 4

What is Original Gravity and why does it matter?

Accepted Answer

Original Gravity (OG) is the sugar content of wort before fermentation, measured as specific gravity (e.g., 1.050) or in °Plato. It determines potential alcohol content: Higher OG means more sugar for yeast to convert to alcohol. Typical values: Session Beer 1.035-1.045, Standard 1.045-1.055, Strong Ale 1.060-1.080, Imperial 1.080+. The difference from Final Gravity (FG) determines alcohol content. 👉 Use our [OG Calculator](/rechner/stammwuerze-rechner) and [ABV Calculator](/rechner/abv-rechner).

Question 5

What temperature should I mash at?

Accepted Answer

Mash temperature determines beer body: 62-65°C (144-149°F) creates more fermentable sugars for a drier, lighter beer. 68-72°C (154-162°F) creates more unfermentable sugars for a sweeter, fuller-bodied beer. The most popular beginner method is a single infusion mash at 66-68°C (150-154°F) for 60 minutes. For more complex profiles, step mashing with different rests can be used.

Question 6

How long should I boil the wort?

Accepted Answer

Standard boil time is 60 minutes. This is sufficient for sterilization, protein coagulation, DMS removal, and hop isomerization. Some styles use 90 minutes (Pilsner for better DMS reduction) or only 30 minutes (some modern methods). Bittering hops are added at the start, aroma hops in the last 15-0 minutes.

Question 7

What is the right fermentation temperature?

Accepted Answer

Optimal fermentation temperature depends on the yeast strain and is listed on the yeast package. Generally: Ale yeast: 18-24°C (64-75°F), Lager yeast: 8-14°C (46-57°F), Belgian yeast: often higher (22-28°C/72-82°F) for more esters. Too warm creates unwanted fusel alcohols and fruity off-flavors, too cold can stall fermentation. Temperature control is one of the most important factors for good beer.

Question 8

How does dry hopping work?

Accepted Answer

Dry hopping adds hops during or after fermentation to extract intense hop aromas without additional bitterness. Typical: 3-7 days at fermentation temperature, 2-10g hops per liter. Can be done during primary fermentation (while actively fermenting) or secondary. Important for hop-forward styles like IPA, Pale Ale. Longer dry hopping can create grassy notes.

Question 9

What hops should I use for an IPA?

Accepted Answer

Classic American IPA hops are Cascade, Centennial, Chinook, Simcoe, and Columbus. For modern, tropical IPAs: Citra, Mosaic, Galaxy, Amarillo, El Dorado. For West Coast IPA: higher bitterness with Simcoe, Centennial. For NEIPA: lots of dry hops with Citra, Mosaic, Galaxy. Experiment with combinations – many IPAs use 2-4 different varieties for complexity.

Question 10

Which yeast is right for my beer style?

Accepted Answer

Yeast choice greatly affects flavor: US-05/Safale S-04 are neutral, versatile ale yeasts. For wheat beer: WB-06 or Wyeast 3068 (banana, clove). For Belgian styles: Abbey yeasts (fruity, spicy). For lagers: W-34/70 or S-23. For IPAs: clean-fermenting yeasts that don't mask hop aromas. Fermentation temperature strongly influences the yeast's flavor profile.

Question 11

Which base malt should I use?

Accepted Answer

Base malt choice affects color and base flavor: Pilsner Malt (1.5-2°L): Light, mild, for lagers and Belgian beers. Pale Ale Malt (2.5-3.5°L): More character, for English/American ales. Maris Otter (3°L): British classic, nutty-bready flavor. Vienna/Munich: For fuller, maltier beers. Base malt comprises 80-100% of the grain bill.

Question 12

How much specialty malt can I use?

Accepted Answer

Specialty malts should be used in moderation: Crystal/Caramel malts: 3-10% for sweetness, body, color. Roasted malts (Chocolate, Black): 1-5% – very intense! Munich/Vienna: Up to 40% for more malt character. For beginners: Start with 5-10% total specialty malt and increase to taste. Too much can make beer too sweet, too dark, or too roasty-bitter.

Question 13

My fermentation has stopped – what should I do?

Accepted Answer

First: Check gravity with a hydrometer – often fermentation is simply complete, even if no bubbling is visible. If gravity is too high: 1) Raise temperature (2-3°C/4-5°F) to reactivate yeast. 2) Gently swirl fermenter to rouse yeast. 3) Pitch fresh yeast. 4) For high gravity beers: gradually increase fermentation temperature. Be patient – sometimes yeast just needs more time.

Question 14

My beer tastes off – common off-flavors

Accepted Answer

Common off-flavors and causes: Apple/Cider: Immature yeast or fermented too warm – let it condition longer. Butter/Diacetyl: Fermentation too short – do a diacetyl rest at 18°C/64°F for 2-3 days. Sulfur: Normal with lager yeast – disappears with conditioning. Cardboard/Oxidation: Too much oxygen exposure after fermentation – better bottling practices. Vinegar: Infection – better sanitation needed. Band-Aid/Plastic: Chlorine in water or wild yeast – treat water with Campden tablets.

Question 15

My beer is flat or over-carbonated

Accepted Answer

Flat beer: 1) Too little priming sugar – use our [Carbonation Calculator](/rechner/karbonisierung-rechner). 2) Stored too cold – conditioning needs warmth (18-22°C/64-72°F). 3) Leaky bottles or caps. 4) Give more time (3-4 weeks). Over-carbonated/Gushers: 1) Too much sugar – always measure precisely. 2) Infection – wild yeast produces extra CO2. 3) Bottled too early – primary fermentation wasn't complete. 4) With gushers: Caution, explosion risk! Chill bottles and open slowly.

Question 16

Why is my beer cloudy?

Accepted Answer

Cloudiness has various causes: Yeast: Normal, especially in Hefeweizen – cold condition to let yeast settle. Protein: Occurs when chilled (Chill Haze) – protein rest in mash schedule or Irish Moss during boil helps. Starch: Incomplete conversion – longer mash time or higher temperature. Infection: With milky-cloudy consistency and sour taste. For clear beer: Enough conditioning time, cold storage, optionally gelatin or other fining agents.

Question 17

What equipment do I need to start brewing?

Accepted Answer

Basic equipment for beginners: Brew kettle (min. 10L larger than batch), Fermenter with airlock, Thermometer, Hydrometer or refractometer, Bottles with caps/capper or swing-top bottles, Cleaning/sanitizing solution. Optional but recommended: Mash/lauter tun or bag for all-grain, Wort chiller, Scale, Measuring cups. All-in-one systems like Grainfather simplify the process but cost more.

Question 18

How important is sanitation in brewing?

Accepted Answer

Sanitation is CRITICAL for good beer! Everything that contacts wort/beer after boiling must be sanitized. Products: Star San (no-rinse acid), Chemipro OXI (oxygen-based). Before boiling, cleaning is sufficient since boiling sterilizes. Common mistakes: Insufficient contact time, missing areas, damaged surfaces. If you get infections, review your sanitation protocol.

Question 19

How much priming sugar for carbonation?

Accepted Answer

Sugar amount depends on desired CO2 level and beer style: Typically 5-8g table sugar per liter. Stout/Porter: ~4-5g/L (low carbonation). Pale Ale/IPA: ~6-7g/L (medium carbonation). Wheat/Belgian: ~8-9g/L (high carbonation). Too much sugar = gushers or exploding bottles. Also consider fermentation temperature and residual extract. 👉 Use our [Carbonation Calculator](/rechner/karbonisierung-rechner) for exact amounts!

Question 20

What is the difference between all-grain and extract brewing?

Accepted Answer

All-grain brewing means mashing malt yourself to extract the wort - full control over ingredients and flavor. Extract brewing uses ready-made malt extract (liquid or powder) - easier, faster, but less flexibility. Beginners often start with extract and switch to all-grain later. Our [Recipe Wizard](/wizard) supports both methods!

Frequently Asked Questions

How long does beer fermentation take?

What is the difference between Ale and Lager?

What does IBU mean in beer?

What is Original Gravity and why does it matter?

What temperature should I mash at?

How long should I boil the wort?

What is the right fermentation temperature?

How does dry hopping work?

What hops should I use for an IPA?

Which yeast is right for my beer style?

Which base malt should I use?

How much specialty malt can I use?

My fermentation has stopped – what should I do?

My beer tastes off – common off-flavors

My beer is flat or over-carbonated

Why is my beer cloudy?

What equipment do I need to start brewing?

How important is sanitation in brewing?

How much priming sugar for carbonation?

What is the difference between all-grain and extract brewing?

How much beer can I brew with 20L equipment?

How does homebrewing cost compare to buying beer?

Do I need a brewing kit or can I improvise?

How do I store my homebrew properly?

What is lautering and how does it work?

When and how do I add hops?

What are whirlpool hops?

How does dry hopping work?

What is a diacetyl rest?

Which base malt for which beer style?

What are specialty malts and when do I need them?

Pellets vs. whole hops - which is better?

Which yeast for beginners?

What are brewing additives (yeast nutrients, Irish Moss)?

My beer tastes like apple - what to do?

Why is my beer cloudy?

Fermentation won't start - what am I doing wrong?

My beer has no foam - why?

What are "off-flavors" and how do I avoid them?

All-in-one vs. traditional setup - which is better?

Do I need a fermentation fridge?

Which thermometers are recommended?

Glass vs. plastic fermenter?

What is a refractometer and do I need one?

How does the AI recipe generator work?

Can AI create good beer recipes? Are the recipes brewable?

Is Craft Beer Wizard free to use?

Can the AI create clone recipes of famous beers?

What beer styles does the generator support?

How is the AI recipe generator different from ChatGPT?

Still have questions?