For fermenting you mean like wine or beer? We aren't allowed to drink alcohol. We've both had gastric bypasses to get rid of our type 2 diabetes (yes, get rid of it, ask me about it sometime, I love talking about it.
) and our surgeon feels that the studies linking alcohol to increased instances of ulcers make it significant enough that he doesn't want us drinking it at all because our stomachs have been so altered. He feels the risk is greater than the rewards of even the very occasional glass of wine. Though, to be fair, neither of us really -like- alcoholic beverages at all.
There are a very few wines I like, but mostly I don't care for how I feel when I drink them, so it's not that big of a loss for us.
Thank you, though, for the idea. If I weren't a teatotaller, it'd be spot on.