From a mild chill to an explosion of heat, this ranking will take you through a scale of spiciness that will test even the most intrepid palates. But how is the spiciness of a chili pepper measured?

The spiciest food on the planet is the Trinidad Scorpion, a golf-ball-sized pepper cultivatable in most parts of the world "You take a bite. It doesn't seem so bad, and then it builds and it ...