I'm pretty sure you can replace the grapes with ginger, but you would have to make a few tests. I've recently been catching yeast with ginger to make a kind of beer/wine/slightly alcoholic drink. It is on it's way to becoming good alcohol but I have negliged it, though I know it works. It's basically a ginger bug starter you have to make. One cup
water in a small glass jar, add one
tsp of grated ginger and one tsp of sugar. Cover it with a cheesecloth and leave it in a cool dark place. Every day, stir it a bit, give it another tsp of grated ginger and sugar and some love for 7 days. It will bubble, and that is your starter. Then, add that to whatever you want to turn into wine, with a lot of sugar for the yeast to
feed on. Cover with a cheesecloth or a device to release the
carbon without letting in oxygen (or simply a baloon with wholes you poked with a needle) and let it for a while, checking it every couple of days if it smells and tastes right. When you think it is ready, put it in bottles and leave it longer, but I didnt get to that point yet so use your intuition!
A question: crab
apple can replace the lemon? Can I also catch yeast with crab
apple either with the technique I mentioned above or with another technique? Please enlighten me, because I have a shit-ton of crab apples in my backyard! I wanted to make an ice-crab-apple cider with them. Would I need grapes and lemon or some other yeast or the crab apples can do the whole job on their own?