^{The Scoville scale rates the spiciness of peppers through the measurement of capsaicin levels. Created by Wilbur Scoville, the unit of measurement is the Scoville Heat Unit (SHU), and peppers range from 0 SHUs (bell pepper) to over 2 million SHUs (Carolina Reaper).. There are thousands of different pepper varieties around the world, with more being created every year through plant breeding.} The Puckerbutt Pepper Company - the makers of the well known Carolina Reaper - have another trick up their super-hot sleeve. Pepper X can be nearly double the heat of the mildest Reaper and a hefty 493,000 Scoville heat units hotter than the Reaper at its max spiciness. This is crazy heat. The Scoville scale. Wilbur Scoville, a pharmacologist, invented the Scoville scale in 1912 to measure the pungency of peppers and chillies, generally related to their capsaicin content. To establish a chilli pepper's rating, Scoville would prepare it in a solution, which was then tested by five people. He increased its dilution until the .