Does anyone know about rejuvelac?

I have heard that one use Rejuvelac as a digestion aid along with kriyas. has anyone made the stuff? And are there dangers to making it yourself versus buying it at a store?

I make it every day. It’s incredibly easy to do.
I tend to have a glass of it, along with a couple of probiotics, around an hour before my morning yoga classes.
Because its slightly fermented, it helps to balance bacteria in the gut, working almost like acidopholis and other probiotics. I’ve found it really useful. Tastes a bit weird, but I’m used to it now!