Comment by abusque

I'm surprised there is no mention of Marcellus Gilmore Edson [0]. He was a pharmacist from Montréal who patented a method to make an early version of peanut butter, more than a decade before the Kellogg's patent mentioned in the Smithsonian article.

[0] https://en.wikipedia.org/wiki/Marcellus_Gilmore_Edson