Officially the world's hottest chilli, according to the Guinness Book of Records, Bhut Jolokia packs a serious punch at over a Megascoville. You don't need many of these to blow your tastebuds away!

This pepper has little to do with the sweet treat we associate chocolate with, save for the rich colour of its skin. The chocolate Habanero pepper packs a punch far spicier than regular Habanero, with 425,000 Scoville units in each pepper.

Fat wrinkled pods from the Central African Republic. Chillies are an attractive golden colour and impart their colour and fresh citrusy flavour into food. This relative of the Habanero is not called Fatalii for nothing, packing a punch at over 350,000ScU.

The name Habanero is Spanish for from Havana. This pepper is used in cuisine throughout the Yucatan. This popular hot pepper has fruits which are small and wrinkled. Scoville rating of up to 350,000 SHU.

Scotch bonnet peppers are very similar to Habanero peppers in both appearance and heat. With Scoville ratings that top out at 325,000, Scotch bonnet peppers take their name from their resemblance to the hats Scottish men wear.

The Tepin, or Chiltepin pepper grows wild in the deserts of Texas, New Mexico, Arizona and northern Mexico. Its tiny, about the size of a large pea, but its been measured at 265,000 Scoville units. Tepin peppers are part of the birds eye variety.

The African Devil is also known as African birdseye, African red devil or Piri Piri. It is used in cooking throughout Southern Africa, especially to accompany chicken and fish and gives its name to the world famous Piri Piri sauce.

Large, extremely pungent chillies with distinctive black seeds from the Peruvian Andes. They are sometimes known as Manzano, or 'apple' because of their shape. Rocotos are remarkably cold-tolerant. 150,000ScU.