TIL that between the 1930s and 1940s, German chemist Arthur Imhausen developed a method of converting coal into synthetic butter. The process took 60 kilograms of coal to produce one kilogram of synthetic butter.

https://en.wikipedia.org/wiki/Margarine#Coal_butter
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1uekult/til_that_between_the_1930s_and_1940s_german/