I have an apple wine in a carboy and I notice that there seems to be sediment on top and not settling on the bottom?? Could this be mold or something?
Tera
Good info, grapeman. Never tried that but will keep it in mind. Thanks, Arne.Sometimes you can get tartaric acid crystals forming in top as well as on the sides, but it is usually mostly on the bottom. Gently tip the carboy an inch or two and let it bump flat (carefully) and don't do it on concrete. If the stuff just drops to the bottom, chances are it was tartaric and you can rack the wine safely off.
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