The strongest and hottest chili pepper in the world is the Carolina reaper pepper. This pepper packs a punch with 2.2 million Scoville heat units.
The Trinidad Moruga scorpion pepper is the second hottest pepper grown. It has 2 million Scoville heat units.
The brain strain pepper has 1.9 million Scoville heat units. This pepper is so hot that those who cook with it must wear masks and gloves.
The three hottest peppers on the Scoville scale get most of their heat from their internal seeds. The peppers are small and used sparingly in recipes to add powerful spice.
The ghost pepper is another very hot pepper which can be purchased at most markets in the United States.