A molecular study carried out by Indian defense researchers indicates that molecular characters and the unique ecological environment of North East India make Bhut Jolokia distinct from other closely related chilli species and keep it world’s hottest. Locally known as “Bhut Jolokia”, this pepper variety found in the North Eastern parts of India and is considered as the hottest chilli in the world.
Bhut Jolokia has grabbed the title ‘world’s hottest chilli’ from the Red Savina Habanero found in Canada, when it was found that Jolokia is at least two times hotter than it in terms of 'Scoville Heat units' which is the measurement of hotness in chillies.
Interestingly, the name Bhut Jolokia hints a ghostly bite, which actually leaves the victim burning for at least 30 minutes without subsiding. It is being used by local people for a variety of purposes like making spicy food, to prepare medicines and even in smoke bombs to keep wild elephants away.
Via Dr. Stefan Gruenwald