My apple cider has been in its jar for about a month now, and some days ago I purchased apple vinegar from the store (not organic, didn't think it had a mother of any kind really). The cider hadn't really changed much as far as I could see, so I decided to put some of the apple vinegar in with it. Well, didn't take long until something happened.
Now I'm very unsure if what I have is good or bad. Hopefully the thing can be seen from the pictures. It's a white/opaque "disk" that floats on top. Is that what I want to see, or is it some sort of bad mold?
