Why doesn’t this exist?
Take dried beans, roast 'em, grind 'em, and brew some bean juice?
I have no idea if it would taste good or not, but we don’t know if we don’t try.
Edit: I need to see what dried beans I have and maybe go shopping. I will give this a try with a couple different types of beans and report back if I fart or not.
I told you, Good Eats. I wasn’t ambiguous. And he gives chemistry reasons why.
He has a food chemist that explains things.
So stick it where the sun doesn’t shine.