I've just noticed the wheat beer I'm planning on bringing along has a definite off flavour. I want to bring it along anyway so people can help identify it for me. It's kind of sharp, and I might have described it as 'solvent-like' only I don't think it can be the solvent off flavour you read about supposedly due to oxidation and a high fermentation temperature, because the beer was fermented at a pretty constant 18C. It reached about 23C for about two hours because I switched on the brew belt once during fermentation when it had dropped to 16C, but I discovered it quickly and switched the heat off. And there were no issues at bottling that would make this brew any more oxidised than my brews usually are (which don't taste tainted). I used WLP380 Hefeweizen yeast.