Chilli pepper seeds are used all over the world in different cultures' cuisines to add flavor and spice to a variety of dishes. From India to Mexico, hot pepper seeds are an integral part of gastronomic traditions. There are hundreds of chilli pepper seed varieties from all different parts of the globe, varying in color, taste, shape and hotness. Here are just a few of the hottest chilli peppers in the world.

Bhut Jolokia
The Bhut Jolokia pepper is the Guinness Book of World Records as the hottest pepper in the world. It comes from the Assam region of northern India and it has an SHU rating of over 1 million, SHU being the unit of measure that determines how hot a pepper is by pinpointing the amount of water it takes to subdue the hotness of any given chilli pepper. SHU stands for Scoville Heat Unit.

Naga Morich
This chilli pepper is the closest relative to the Dorset Naga pepper and has a scorching SHU of 800,000 to 900,000. The Naga Morich is well respected all over the world, and the Bangladeshi Naga Morich is especially rare and highly prized.

Super Chilli
The super chilli pepper has some of the hottest pepper seeds and is also one of the most popular pepper types, due to the fact that it can be grown easily in almost any climate and it yields a pretty generous harvest. When it matures it turns from green to red, and it is hottest when ripe.

The Habanero
The habanero is primarily grown in the Caribbean and in Mexico. It is very hot and has a delicate, plum-tomato taste that makes it special. It has a round shape with a small pointed end and can grow to be up to 1.5 inches in length. The colors of ripe habaneros can range from orange, yellow, green, brown or red. They are best when eaten raw, as cooking them causes them to lose some flavor.

Chocolate Habanero
With an SHU rating of 450,000, the chocolate habanero (which derives its name from its chocolaty brown coloring) has definitely one of the hottest chilli pepper seeds in the world. It is on average about 1.5 to 2.5 inches long, with a similar width.