The Scotch Bonnet pepper is a cultivar of the habanero and is among the hottest peppers anywhere. If you’ve ever tried a habanero pepper, you know it carries some serious heat. The Scotch Bonnet is equally hot, measuring in at 100,000-350,000 Scoville Heat Units (SHU). Compare that to a jalapeno pepper, which averages about 5,000 SHU, and you’ll understand the heat level.