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Peanut butter as we know it today was invented in 1890 by an American doctor.
He used it as a protein substitute for people whose teeth were so bad they couldn't chew meat.
Nice.
The best peanuts for making peanut butter are runner peanuts
because they're uniform and roast more evenly than peanuts that vary in size.
They arrive at the peanut butter factory already shelled.
To make a 500 gram jar of peanut butter, it takes 565 grams.
That's about 1,100 nuts.
The nuts travel through a hot air roaster heated to 204 degrees Celsius.
The shaking motion moves them around so they roast evenly.
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