Also known as Naga Jolokia, this pepper is close to being the hottest pepper in the world. The Guinness Book of World Records recognized the ghost pepper in 2006 after reports surfaced that this pepper has a Scoville heat index of over 1,000,000. If you get your hands on a ghost pepper, be sure to be extremely careful, because one seed from this pepper will have your mouth burning for up to 30 minutes.