So I made a huge mason jar last year of Rumtopf and it came out really good. I still had some leftover when this years strawberry season was starting up, so I transferred the remaining Rumtopf to 1 pint and 1 quart mason jar. When I went to have some a couple of weeks later, the top liquid and fruit looked a bit funky so I tossed everything.
Any guesses on what may have happened to make it turn? The larger mason jar I made it in had a lot of extra room, so I'm guessing the smaller jars didn't have enough air, either that or there was too much fruit and sugar compared to alcohol.
Thanks for any thoughts!