The heat in any chili pepper is measured by something called a Scoville Heat Unit (SHU). It is an index that measures the amount of capsaicin (the substance that makes chilies taste hot) in a pepper.
- At the low end are cherry peppers (500 SHU), poblano (1,500) and pasilla (2,500).
- In the middle range are jalapeños (10,000), cayenne peppers (50,000) and tabasco peppers (75,000).
- Chilies with very high SHU scores include Thai chilies (100,000), habaneros (300,000) and red Savina (500,000).
If you're actually crazy enough to want to eat one, you can grow your own bhut jokolia peppers from seeds sold by NMSU's Chili Pepper Institute Chile Shop. A packet of 10-15 seeds costs $5.