A bean is a type of edible plant producing bipodal seeds.
Beans were one of the foods grown at Omicron colony. (TOS: "This Side of Paradise")
Beans were a key ingredient in the McCoy family recipe for Southern baked beans. (Star Trek V: The Final Frontier)
In an alternate reality, Montgomery Scott criticized Keenser's assertion that he too was as starved as Scott asserted he was, saying "You can eat like a bean, and you're done." (Star Trek)