Airlock?
Airlock?
All I recall is attaching a large balloon to the top of the vinegar bottle, it got huge and then it went down after a period of time.
I would assume the balloon locked in the air.
A few years ago, you could get the recipe that I used on the Welch food site.
LOL, the first time that I tried it, in Portland, Oregon, we were moving in bits and draps and I was there almost a year, while Bill sold out in San Diego.
He came up, and a day or two later, Scott was robbed of his lunch money on the way to school, so the Police were called and we found that he was one of 9 or 10 kids robbed that morning.
After the cop left, Bill asked what the strange smell was, in the chair [stuffed type] that he had been sitting in?
Boy was he mad, when he found out he was hiding the wine factory, that was behind the chair....LOL
It is legal to make small amounts of wine for family use.