I've created a pretty good ginger bug and separately I did a spontaneous grape ferment as a test (delicous).
I'd like to preserve these starters so I don't have to keep maintaining them or start again from scratch.
With my sourdough starter I've sucessfully saved it by drying some starter on parchment paper at room temp, crushing it into powder and freezing it. Later it rehydrates with fresh water and flour in just a day or so. I'm wondering if the same kind of thing can be done with a wild alcohol ferment starter.
My theory is that I could just mix up a batch of raw sugar and water, add some ginger bug and some of my grape ferment together, give it lots of air and at some point, I guess when it gets vigorous, freeze some, dry some out at room temperature or ...?
Then when I make a mead or other alcohol ferment I could use my preserved one like a commercial yeast, throw in a dried bit of it or some that was frozen...?
Any ideas or pointers welcome!