Naga Morich. 1,000,000 - 1,500,000 Scoville Units. Also known as the snake or serpent chili, this pepper is native to North East India and the Sylhet region of Bangladesh. The Naga Morich is an extremely hot pepper, but has a flavor that is quite unique. Genetically, the serpent chili is closely related to both the Ghost pepper (Bhut Jolokia) and the Dorset Naga.