To date, the most expensive hot pepper you can buy is the aji charapita, also known as "the mother of all chilis." Originally harvested in Peru, these tiny peppers can cost upward of $300 per pound.

This dish is named for the yellow chili pepper grown all over Peru. The aji amarillo is a spicy, fruity chili pepper used in classic Peruvian cooking. Aji amarillo marinated grilled pork loin with ...