madbulldog
Member
I have had my cider in secondary for 2 weeks and it suddenly formed a white film floating on top. What should I do?
It appears to be Mercaptans, there is too much head space in that carboy, it is a disaster waiting to happen. Does the cider have an off odor/smell to it, maybe sulfur or rotten eggs?
If it were wine, I'd siphon from under the film to a clean carboy, I'd recommend stabilizing it with meta, going a little heavy on the meta, and make sure that there is an inch or two head space at the most.
I've never treated cider so I cannot tell you that it would work the same, but I believe it will, unless it has progressed to a vinegar.
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