Zusammenfassung
Carbonation levels vary dramatically by style — from 1.5 volumes CO₂ for a British cask ale to 4.5+ volumes for a Belgian witbier. Accurate priming requires knowing your target CO₂ volume, the residual CO₂ already in the beer (determined by Gärung temperature), the sugar type (each has a different yield per gram), and the batch volume. Dieser Leitfaden covers all of it: CO₂ volume targets for 25+ styles, a complete residual CO₂ table, a comparison of 8 Speise-Zucker types, the bottle conditioning process from start to finish, and a force Karbonisierung alternative.
Speise-Zucker CalculatorCalculate the right amount of Speise-Zucker for Flaschenkarbonisierung
Understanding CO₂ Volumes
One “volume” of CO₂ means that for every litre of beer, one litre of CO₂ (at standard temperature and pressure) is dissolved. So a beer carbonated to 2.5 volumes contains 2.5 litres of CO₂ per litre of beer, or roughly 4.9 grams of CO₂ per litre.
The conversion is:
1 volume CO₂ = 1.96 g CO₂ per litre of beer
CO₂ Volume Targets by Style
| Style | Typical CO₂ Volumes | Charakter |
|---|---|---|
| British Cask Ale | 1.0–1.5 | Very low, soft, “real ale” |
| English Bitter | 1.5–2.0 | Low, traditional |
| Scottish Ale | 1.5–2.0 | Low, smooth |
| Irish Stout (Draught) | 1.2–1.7 | Very low (nitrogen-assisted) |
| American Pale Ale | 2.2–2.7 | Medium, classic |
| American IPA | 2.2–2.7 | Medium |
| German Pilsner | 2.4–2.8 | Medium-high, crisp |
| Bohemian Pilsner | 2.3–2.6 | Medium |
| Helles | 2.2–2.6 | Medium |
| Märzen / Oktoberfest | 2.4–2.8 | Medium-high |
| Vienna Lager | 2.4–2.7 | Medium |
| Kölsch | 2.4–2.8 | Medium-high |
| Altbier | 2.2–2.6 | Medium |
| Belgian Witbier | 3.0–4.5 | High, effervescent |
| Belgian Blonde | 2.5–3.5 | Medium-high |
| Belgian Dubbel | 2.3–3.0 | Medium-high |
| Belgian Tripel | 2.5–3.5 | High |
| Belgian Saison | 3.0–4.5 | Very high, champagne-like |
| Hefeweizen | 3.0–4.5 | Very high, signature fizz |
| Berliner Weisse | 3.0–4.5 | Very high, tart and effervescent |
| American Wheat | 2.5–3.0 | Medium-high |
| Porter | 1.8–2.5 | Low-medium |
| Imperial Stout | 1.8–2.5 | Low-medium |
| Barleywine | 1.5–2.3 | Low |
| Cider (dry) | 2.5–3.0 | Medium-high |
| Mead (still) | 0 | Flat |
| Mead (sparkling) | 2.0–3.5 | Variable |
Source: BJCP 2021 Style Guidelines, brewer convention, and Brewing Classic Styles by Jamil Zainasheff and John Palmer.
Residual CO₂: What Is Already in Your Beer
After Gärung, your beer is not flat. It already contains dissolved CO₂ from the Gärung process itself. The amount depends on the highest temperature the beer reached during Gärung (or more precisely, during the final days of Gärung and any cold conditioning).
The higher the temperature, the less CO₂ remains dissolved (gases are less soluble in warmer liquids). This is critical: if you ignore residual CO₂ and add sugar based on the full target volume, your bottles will be over-carbonated and may even explode.
Residual CO₂ by Gärung Temperature
| Gärung Temp °C (°F) | Residual CO₂ (volumes) | Residual CO₂ (g/L) |
|---|---|---|
| 0 (32) | 1.70 | 3.33 |
| 2 (36) | 1.60 | 3.14 |
| 4 (39) | 1.50 | 2.94 |
| 6 (43) | 1.40 | 2.74 |
| 8 (46) | 1.32 | 2.59 |
| 10 (50) | 1.23 | 2.41 |
| 12 (54) | 1.16 | 2.27 |
| 14 (57) | 1.08 | 2.12 |
| 16 (61) | 1.01 | 1.98 |
| 18 (64) | 0.95 | 1.86 |
| 20 (68) | 0.88 | 1.73 |
| 22 (72) | 0.83 | 1.63 |
| 24 (75) | 0.77 | 1.51 |
| 26 (79) | 0.72 | 1.41 |
| 28 (82) | 0.67 | 1.31 |
| 30 (86) | 0.62 | 1.22 |
Key insight: An ale fermented at 20 °C (68 °F) has about 0.88 volumes of residual CO₂. A lager cold-conditioned at 2 °C (36 °F) has about 1.60 volumes. This means the lager needs significantly less Speise-Zucker to reach the same target, despite lager styles often wanting higher Karbonisierung.
The Speise-Zucker Formula
Sugar (g) = (Target CO₂ − Residual CO₂) × Volume (L) × Sugar Factor
Where the Sugar Factor depends on the type of sugar (see next section).
For table sugar (sucrose): Sugar Factor = 3.83 g per litre per volume CO₂.
Example: 19 litres (5 US gallons) of pale ale, fermented at 18 °C, target 2.4 volumes:
- Needed CO₂ = 2.4 − 0.95 = 1.45 volumes
- Sugar = 1.45 × 19 × 3.83 = 105.5 g table sugar
Sugar Type Comparison: 8 Options
Not all sugars are created equal. Different sugars have different levels of fermentability and different yields of CO₂ per gram. Hier ist ein comprehensive comparison:
| Sugar Type | CO₂ Yield (g CO₂ per g sugar) | Factor (g/L/vol) | Flavour Contribution | Anmerkungen |
|---|---|---|---|---|
| Table sugar (sucrose) | 0.51 | 3.83 | None | Baseline reference |
| Corn sugar (dextrose) | 0.46 | 4.24 | None | Most common in US Hobbybrauen |
| Dry Malzextrakt (DME) | 0.37 | 5.27 | Slight malt character | ~80% fermentable |
| Honey | 0.43 | 4.54 | Subtle honey aroma | Variable fermentability |
| Belgian candi sugar (clear) | 0.51 | 3.83 | None (dark versions add flavour) | Same yield as sucrose |
| Maple syrup | 0.37 | 5.27 | Subtle maple character | ~67% sugar by weight |
| Brown sugar | 0.49 | 3.98 | Slight molasses note | Contains some invert sugar |
| Carbonation drops (tabs) | Varies | Pre-dosed | None | Convenient but less precise |
Why Corn Sugar Needs More Than Table Sugar
This confuses many brewers. Corn sugar (dextrose monohydrate) contains about 9% water by weight. So 100 g of corn sugar delivers only about 91 g of actual glucose, versus 100 g of pure fermentable sugar from sucrose. The CO₂ yield per gram of product is therefore lower.
In practical terms: - 100 g sucrose and 110 g dextrose produce the same Karbonisierung. - The ratio is approximately 1:1.10 (sucrose to dextrose).
Using DME for Priming
Some brewers prefer DME because it does not contribute a “cidery” or “thin” quality that table sugar is sometimes (incorrectly) accused of causing. The main challenge is that DME is only about 70–80% fermentable (depending on the Basismalz and mashing conditions used during manufacture), so you need about 38% more by weight than table sugar.
DME amount = Sucrose amount × 1.38
The Bottle Conditioning Process
Step-by-Step
| Step | Action | Details |
|---|---|---|
| 1 | Calculate Speise-Zucker | Use calculator with target CO₂, residual CO₂, volume, and sugar type |
| 2 | Prepare sugar solution | Dissolve sugar in 150–250 ml (5–8 oz) of boiling water; cool to room temperature |
| 3 | Transfer beer to bottling bucket | Rack gently from Gärbehälter, leaving sediment behind |
| 4 | Add sugar solution | Pour into bottling bucket before or during racking to ensure even mixing |
| 5 | Stir gently | Use a sanitised spoon; stir slowly for 30 seconds to distribute evenly; avoid splashing (oxidation) |
| 6 | Fill bottles | Leave 2–3 cm (1 in) of headspace |
| 7 | Cap or cork | Ensure tight seal |
| 8 | Condition | Store at 18–24 °C (64–75 °F) for 2–3 weeks |
| 9 | Chill and test | Refrigerate one bottle for 48 hours, then open and evaluate Karbonisierung |
Conditioning Temperature and Time
| Temperature | Time to Full Carbonation | Anmerkungen |
|---|---|---|
| 12–15 °C (54–59 °F) | 4–6 weeks | Slow but fine results |
| 16–18 °C (61–64 °F) | 3–4 weeks | Good for lagers post-priming |
| 18–22 °C (64–72 °F) | 2–3 weeks | Ideal for most ales |
| 22–26 °C (72–79 °F) | 1.5–2 weeks | Faster, but may produce off-flavours in light beers |
| > 26 °C (79 °F) | 1–1.5 weeks | Not recommended — risk of autolysis, fusel alcohols |
Higher temperatures accelerate yeast activity but can produce off-flavours. For best results, aim for 20 °C (68 °F) and be patient.
High-Gravity Beers: When to Add Fresh Yeast
If your beer has been in the Gärbehälter for more than 4 weeks, has undergone cold crashing, or is above 8% ABV, the remaining yeast may be insufficient for Karbonisierung. In these cases, add a small amount of fresh yeast at bottling time.
| Scenario | Recommended Yeast Gabe |
|---|---|
| Standard beer, < 4 weeks in Gärbehälter | None needed |
| Beer aged > 6 weeks | 0.5 g Trockenhefe per 19 L |
| Cold-crashed beer | 0.5 g Trockenhefe per 19 L |
| Beer > 8% ABV | 1.0 g Trockenhefe per 19 L |
| Beer > 10% ABV or aged > 3 months | 2.0 g Trockenhefe per 19 L |
Use a clean, neutral yeast (such as Safale US-05 or Fermentis F-2, which is specifically designed for bottle conditioning). Rehydrate the yeast in a small amount of warm water (25 °C / 77 °F) for 15 minutes before adding to the bottling bucket with the sugar solution.
Force Carbonation: The Keg Alternative
If you keg your beer, you can skip Speise-Zucker entirely and force carbonate with CO₂ from a cylinder. This gives you precise control and near-instant Karbonisierung.
Set-and-Forget Method
- Transfer beer to a sanitised Cornelius keg.
- Purge headspace with CO₂ (3–4 bursts).
- Set regulator to the pressure corresponding to your target CO₂ volumes at your serving/storage temperature.
- Wait 7–14 days.
Force Carbonation Pressure Table (PSI)
| Temp °C (°F) | 2.0 vol | 2.5 vol | 3.0 vol | 3.5 vol | 4.0 vol |
|---|---|---|---|---|---|
| 1 (34) | 5.3 | 8.5 | 11.7 | 14.9 | 18.1 |
| 3 (38) | 6.4 | 9.7 | 13.1 | 16.4 | 19.7 |
| 5 (41) | 7.5 | 11.1 | 14.6 | 18.1 | 21.6 |
| 7 (45) | 8.8 | 12.5 | 16.2 | 19.9 | 23.6 |
| 10 (50) | 10.8 | 14.8 | 18.8 | 22.8 | 26.8 |
| 13 (55) | 12.9 | 17.3 | 21.6 | 26.0 | 30.3 |
| 16 (61) | 15.3 | 19.9 | 24.6 | 29.3 | 34.0 |
| 20 (68) | 18.5 | 23.7 | 28.9 | 34.1 | 39.3 |
Burst Carbonation (Quick Method)
- Chill beer to 1–3 °C (34–38 °F).
- Set regulator to 30 PSI (207 kPa).
- Connect gas, shake keg vigorously for 60 seconds.
- Disconnect gas, vent keg to release excess pressure.
- Set regulator to serving pressure (10–14 PSI for most ales).
- Let settle for 24 hours.
- Test and adjust.
This method can fully carbonate a keg in 24–48 hours, but it requires some trial and error. Over-Karbonisierung is easy to fix in a keg (just vent) but impossible to fix in bottles.
Troubleshooting Carbonation Problems
| Problem | Wahrscheinliche Ursache | Solution |
|---|---|---|
| Flat bottles after 3 weeks | Insufficient yeast, low temperature, poor seal | Move to warmer location; check caps; add yeast if needed |
| Over-carbonated (gushing) | Too much Speise-Zucker, infection, bottled too early | Chill bottles immediately; open carefully; check FG was stable |
| Uneven Karbonisierung (some bottles flat, some over-carbonated) | Poor mixing of Speise-Zucker | Better stirring technique next time; always dissolve in water first |
| Bottle bombs (exploding bottles) | Serious — infection, bottled before FG stable, massive over-priming | Move bottles to a safe container; chill to slow yeast; open carefully outdoors |
| Slow conditioning | Cold temperatures, high-ABV beer, low yeast count | Move to 20–22 °C; wait longer; next time add fresh yeast at bottling |
For deeper coverage of Karbonisierung problems, including diagnosis and prevention of bottle bombs, see our guide on Carbonation Troubleshooting Guide.
Common Priming Mistakes
Mistake 1: Using Online Calculators with Wrong Einheits
Some calculators ask for volumes in US gallons, others in litres. Entering 19 litres into a field expecting US gallons will give you Speise-Zucker for 72 litres of beer — a recipe for bottle bombs. Always verify the unit before calculating.
Mistake 2: Measuring Sugar by Volume Instead of Weight
A “cup” of corn sugar weighs differently depending on how tightly it is packed — anywhere from 110 to 160 grams. Always weigh your Speise-Zucker with a kitchen scale. Even a basic scale accurate to ±1 g is fine for this purpose.
Mistake 3: Ignoring Residual CO₂
Using a flat 2.4 volumes as your target without subtracting residual CO₂ means you are adding too much sugar. This is especially problematic for lagers cold-conditioned at near-freezing temperatures, where residual CO₂ can be 1.5+ volumes.
Mistake 4: Adding Sugar Directly to the Bottling Bucket
Dry sugar poured into a bottling bucket does not distribute evenly, no matter how well you stir. Always dissolve it in hot water first, cool the solution, and then add it to the bucket.
Mistake 5: Bottling Before Gärung Is Complete
If your FG has not stabilised (i.e., readings are still dropping), bottling will result in over-Karbonisierung because the yeast will consume both the remaining Würze sugars and the Speise-Zucker. Always confirm FG with two readings 48–72 hours apart. Use our Abv Calculator Complete Guide to verify your final ABV makes sense for the style and yeast.
Batch Priming vs Individual Bottle Priming
| Method | Pros | Cons |
|---|---|---|
| Batch priming (sugar in bucket) | Even distribution, precise control, one measurement | Requires bottling bucket, transfer step |
| Carbonation drops (per bottle) | Convenient, no extra equipment | Less precise, one-size-fits-all dosing |
| Individual dosing (weighed per bottle) | Can vary Karbonisierung per bottle | Extremely tedious, scale accuracy matters |
Batch priming is the recommended method for consistent results. Carbonation drops work in a pinch but do not account for bottle size differences, residual CO₂ variation, or style-specific targets. For those interested in the complete bottle conditioning process including long-term storage, see Bottle Conditioning Complete Guide.
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Methodik
CO₂ volume targets by style are sourced from the BJCP 2021 Style Guidelines and cross-referenced with Brewing Classic Styles by Jamil Zainasheff and John Palmer (Brewers Publications, 2007). The residual CO₂ table is derived from Henry’s Law solubility data for CO₂ in water/ethanol solutions, as published in the ASBC Methods of Analysis, Beer-13 (CO₂ Content). Specific values were generated using the formula from New Brewing Lager Beer by Greg Noonan (Brewers Publications, 1996), Chapter 19.
Sugar CO₂ yield values are calculated from stoichiometric Gärung equations (C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂) adjusted for the molecular weight and water content of each sugar type. DME fermentability (~75%) is based on typical extract assay data published by Malzextrakt manufacturers. The dextrose monohydrate correction (9% water) is from the food chemistry standard for this product.
Force Karbonisierung pressure data is computed from the Henry’s Law equation with constants from Bamforth’s Brewing Materials and Processes (Academic Press, 2016). John Palmer’s How to Brew (4th Edition, Brewers Publications, 2017), Chapter 11, was referenced for the bottle conditioning process and troubleshooting guidance.