Today I dumped a 5-gal batch of beer- my first batch I've ever dumped. It was a hefeweizen I barely knew. I'm not sure exactly what happened- the symptom was a plastic-y taste that I believe was due to an overabundance of phenols. I've read about this flaw and I have a number of theories about why this happened: a PET carboy with some brush scratches perhaps leading to sanitation problems, insufficiently rinsed bleach, lower than desired fermentation temps, and possibly even over extraction from the grains... sigh.





