Thanks, I have some and put it in a batch of cider for more flavour but a few drops in five gallons was a little too much. I have become more of a mead guy now.
It's from California, Best Flavours Organic Red Apple.
I bottle my mead in wine bottles and have never had one go off.
It could happen if you added anything to keep it working(such as fruit) or sugar or more honey when bottling. I never cap it unless in Grolsch bottles.
I have been making mead for about 10 years and I get my best mead by using only my own honey(beekeeper)and filtered water and wine yeast. I rack every three months for a year. Bottle it and cork it and comes out with a nice fizz and great taste.