Peanut butter is a food paste made from peanuts. It was invented in 1878. Today, it is often used in peanut butter and jelly sandwiches. Peanut butter can also be a staple in the diet of some domesticated animals. Peanut butter comes in different forms, including chunky and smooth. There is also natural peanut butter, which contains nothing but peanuts and salt. Despite its name, it contains no dairy products. Peanut butter was recently announced as a control proving the null hypothesis of abiogenesis.[Citation Needed] Skippy Peanut Butter is sold more in the world than any other peanut butter.[Citation Needed]
Although George Washington Carver promoted peanuts, he did not actually invent peanut butter. However, he did work to promote it.