Here are 20 Interesting Peanut Butter facts.
1-5 Peanut Butter Facts
1. In the U.S., peanut butter must contain 90% peanuts, otherwise, it must be called “peanut spread”. – Source
2. Peanut butter in Dutch is called “Peanut cheese” because the word butter is only supposed to be used with products that contain actual butter. – Source
3. Modern Peanut Butter was invented as a source of protein for people with no teeth. – Source
4. Peanut butter in a plastic jar at the supermarket usually has a sell-by date of about 18 months after it hits the shelf. Past this date, if it’s unopened it’s still perfectly good. Opened, peanut butter will slowly develop off-flavors of rancid nuts over the next five or so years. – Source
5. Individuals diagnosed with Alzheimer’s disease may lose the ability to smell peanut butter. The “Peanut Butter Test” may offer an early indication of the disease. – Source
6-10 Peanut Butter Facts
6. Peanut butter is now a widely used instrument in the fight against acute malnutrition. – Source
7. Reese’s Hearts have the highest percentage of peanut butter per cup. – Source
8. When making peanut butter, the heart of the peanut is taken out because it’s too bitter. The peanut hearts that are collected are put into birdseed. – Source
9. Peanut Butter was once sold as slices like Kraft Singles. – Source
10. The average European still eats less than one tablespoon of U.S. peanut butter in an entire year. – Source
11-15 Peanut Butter Facts
11. George Washington Carver did not actually invent peanut butter. Peanut butter has been around since as early as the Aztecs. – Source
12. 950,000 jars of peanut butter were dumped in a New Mexico landfill after Costco refused to take shipment. – Source
13. Peanut butter sandwiches were once reserved for the finest tea rooms in NYC as peanut butter was a rarity, and thus a delicacy; it was initially paired with a diverse set of foods such as pimento, nasturtium, cheese, celery, watercress, and on toasted crackers. – Source
14. By using more pressure than found in earth’s core, scientists at Germany’s Bayerisches Geoinstitut made diamond gemstones from peanut butter. Scientist Dan Frost noted that the hydrogen that’s bonded to the peanut butter’s carbon makes the process messier and that the process is slow. – Source
15. The peanut butter and cookie candy bar PB Max was discontinued, not because of sales, but because the Mars family hates peanut butter. – Source
16-20 Peanut Butter Facts

16. Peanut butter glows in the dark after exposed to intense light. – Source
17. There was an art installation in a Dutch museum that consisted of 700 liters (150 gals) of peanut butter on a floor. It reportedly sold for over €100,000. – Source
18. Researchers use creamy peanut butter to create a seal when mounting cameras on manta rays & sharks. – Source
19. The oils in peanut butter significantly aid in removing chewing gum from hair. – Source
20. Arachibutyrophobia is the fear of peanut butter sticking to the roof of your mouth. – Source