carolina reaper -- 1,400,000 to 2,200,000 shu
it's a united states hot pepper variety (south carolina) with insane heat, coming in from 1,400,000 scoville heat units (shu) up to a mind and taste bud boggling 2,200,000 shu. that's essentially 200,000 shu hotter than the hottest possible scorpion pepper.