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However, peanuts are not nuts at all. They belong to the family of legumes (just like peas and beans).
George Washington Carver is credited for finding over 300 uses for the
peanut and the plant, but it is John H. Kellog who invented the first
peanut butter in the 1870's. Kellog recommended that his patients who
were "suffering from vegetarianism" eat the peanut butter.