As everyone has said, mold. And I agree, skim the mold off, rack it to a carboy, k-meta it and put an airlock on it. And I think after a couple of days, I would take a little taste of it.
I know a lot of people like dandelion wine but to be honest, the amount of work you have to put into it just isn't worth it. You should see if you can buy a bottle somewhere to taste it to see if it is something you would like
No I haven't used any oak during secondary fermentation and I am thinking yes this would be an opportune time for some oak. Also, taste the wine before removing the oak, time lines are good but tasting is better.
Hi Jeffrob,
Normally I use 3 oz. of Hungarian Oak in my blackberry and this is for a five gallon batch. I won't use more than 1 oz for a one gallon batch