oxidation

I have recently made pear wine. I bottled after 2 months, and then 2 months after that I have opened a bottle to discover it tastes a little bit sour. I have some acid reducing crystals which I am told can help, and was hoping I could open my bottles, add the crystals, then recork and see if it...

Hey all, I am brewing my first grape wine kit after lots of experience with country wines. I have never had my other wines oxidize, and I am generally very careful to prevent it. However, I just tasted a sample of my shiraz blend kit that I decided to bulk age instead of bottling right away...