Hot peppers (chilies) are often used to spice up dishes, and they are especially popular in ethnic cuisine including Mexican, Indian, Thai, Vietnamese, Arab and Spanish cooking. Chilies are an excellent source of vitamin C if you can withstand their powerful bite.
Contrary to popular belief, the hottest part of the chili pepper is not the seeds but where the seed attaches to the white membrane inside the pepper. This area has the highest concentration of capsaicinoids. Capsaicinoids are flavorless, odorless substances that act on pain receptors in the mouth and throat. Capsaicin is the primary capsaicinoid. Capsaicinoids can be found throughout the flesh of chili peppers though their concentration varies in different areas so that one part of a pepper may be hot and another part of the same pepper quite mild.