A century ago, a brave Connecticut-based pharmacist, Wilbur Scoville, dared to eat every hot pepper in order to create a scale that measured their pungency (level of spicy-hot).
After eating a hot pepper, he would analyze how the pepper had made him feel—would it make him tear up? Make his tongue burn for hours? And then he would write it all down and assign it a number, or Scoville heat unit (SHU). Like we said: brave.