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Homebrew Troubleshooting
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Flashcards
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Stuck Fermentation
Possible causes include insufficient yeast, incorrect temperatures, or lack of nutrients. Solutions: Re-pitch more yeast, adjust temperature, or add nutrients.
Infection or Contamination
Causes are usually improper sanitation or wild yeast. Solutions: Improve sanitation practices, use proper sterilization techniques, and ensure airtight seals.
Off-flavors or Aromas
Could be due to chlorinated water, poor yeast health, or fermentation temperature issues. Solution: Use filtered water, healthy yeast, control fermentation temperature.
Cloudy Beer
Possible causes: Proteins, yeast in suspension, or starches. Solutions: Use finings, cold crash beer, ensure complete fermentation.
Low Alcohol Content
Could result from a low original gravity, incomplete fermentation, or measurement error. Solutions: Review recipe, ensure complete fermentation, recalibrate hydrometer.
High Alcohol Content
Causes may include higher than expected original gravity or a more complete fermentation. Solutions: Adjust recipe, check fermentation process, and dilute if needed.
Excessive Foam During Fermentation
Could be caused by high fermentation temperature, over-pitching yeast, or excessive proteins. Solutions: Control fermentation temperature, pitch yeast correctly, and address wort composition.
Sediment at the Bottom of Bottles
Often due to yeast or hop debris. Solutions: Allow longer settling, use fining agents, or filter the beer before bottling.
Sour or Acidic Taste
Can be caused by bacterial infection, high acid malt, or poor water profile. Solutions: Improve sanitation, adjust malt bill, balance water pH.
Unintended Vinegar Flavor
Acetic acid production from bacterial contamination. Solutions: Sanitize all equipment, seal fermentor properly, and avoid oxygen exposure post-fermentation.
Diminished Hop Aroma
Caused by hop degradation, wrong hop schedule, or poor storage. Solutions: Use fresh hops, optimize hop schedule, store beer correctly.
Unexpectedly Bitter Beer
May be due to over hopping, extended boil times or water profile issues. Solutions: Adjust hopping rates, monitor boil time, and check water chemistry.
Beer is Too Sweet
Possible from unfermented sugars, low attenuation yeast, or incorrect mash temperatures. Solutions: Ensure yeast health, use a higher attenuating yeast strain or adjust mash temperatures.
Lack of Head Retention
Could be caused by oils or fats in the brewing process, improper glassware, or lack of proteins. Solutions: Avoid any ingredients with oils, clean glasses properly, and adjust malt bill for more proteins.
Flat Beer
Result of low carbonation due to insufficient priming sugar, yeast health, or leaky bottles. Solutions: Measure priming sugar accurately, ensure yeast vitality, and check seals on bottles.
Beer Color is Too Dark
This can occur bFrom caramelization during the boil, using too much dark malt, or oxidation. Solutions: Avoid prolonged boils, adjust malt bill, and prevent oxidation.
Beer Color is Too Light
Possible due to insufficient amounts of the proper malts or incorrect malt types. Solutions: Adjust the malt bill to include specialty grains, or review malt extract quality.
Phenolic Off-flavors (Medicinal, Smoky, Spicy)
Caused by chlorine in water, wild yeast contamination or high fermentation temperatures. Solutions: Use filtered/dechlorinated water, improve sanitation, and control fermentation temps.
Diacetyl (Butter-like Flavor)
May be due to yeast stress or insufficient conditioning. Solutions: Ensure a healthy yeast pitch, allow more time for conditioning, and perform a diacetyl rest.
Overcarbonation in Bottles
Typically caused by bottling before fermentation is complete, excess priming sugar, or infection. Solutions: Ensure fermentation completion, correctly calculate priming sugar, address sanitation.
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