Peanut butter is one of my favorite foods! It is versatile, tasty, and it is a good source of protein. Did you know that in 1890, according to the Peanut Butter Lovers website, people with bad teeth were advised to have peanut butter paste? A doctor from Missouri’s largest city, St. Louis, actually came up with this idea. And peanut butter wasn’t expensive either, for just 6 cents, people could get a pound of peanut paste.