Like the title says.
Lots of recipes, out there,less feedback.
At first I thought it was the soaking
water left from the sprouting process.
Digging deeper, it seems like the rejuvelac is the two (or even three) batches of liquid made from already sprouted grains.
This blog uses the Sandor Katz recipe:
Making Rejuvelac
So I'm thinking it might be the better path.
I don't know if want to mess with spouting,the soaking and discarding over and over again, so I might go with barley water or
milk and ferment that instead.