Capsaicin

[Sarah]

A colorless crystalline substance extracted from the Capsicumannuum, and giving off vapors of intense acridity.

[Sarah]

The chemical in chili peppers that makes them hot. Actually a mild irritant.

[Sarah]

Hot sauce

[Monty]

The compound found in the placental ribs of a chili. Responsible for the heat of the chili causing watery eyes, a runny nose, sweating and burning. It has been found not only to stimulate pain receptors in the digestive tract, but to block some as well- allowing people to become accustomed to hotter and hotter dishes.

[Cami]

the substance in chillis (= small hot-tasting peppers) that gives them their hot taste

[Mark Zuckerberg]

A compound that is responsible for the pungency of capsicums.