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.
You can get it in a can, just gotta’ pour it off before you toss all the beans. Or get one of those big boba straws… pro tip: buy a few cans, there’s just not enough in one.