If beans are eaten with rice or corn at the same meal, the protein is complete.
Beans are a nutritious vegetarian choice for healthy meal plans.
There have been several mentions of the fact that beans alone — though high in protein — are not a complete protein and lack certain amino acids. However, if beans are eaten with rice or corn at the same meal, the protein is complete. Many Mexican foods are based on beans and rice, and citizens of that country seem to be healthy enough. Besides beans are a nutritious vegetarian choice, who can refuse a steaming bowl of bean soup and fresh corn bread with home-churned butter?
Oklahoma City, OK
(Country Lore, September 1975)