Ok so coffee is made from coffee beans. And beans are also made from beans. Why is nobody making, like, black bean coffee?
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.
But since we're on this fascinating topic, here's a Youtube video about other things people have tried to substitute for coffee during the American civil war. (Hint: not beans.)