Hot peppers are less hot when they're unripe, and more hot when they're ripe. Choose ripe or unripe. $0.25 per pepper or $5 per pint.
Adjuma peppers are small and round. They ripen from green to yellow. Scoville score = 100,000-500,000 SHU.
Habanero peppers are stocky and crinkly. This variety ripens from green to orange. Scoville score = 100,000-350,000 SHU.
Cayenne peppers are long and narrow. They ripen from green to red. Scoville score = 25,000-50,000 SHU.
Lemon drop peppers are narrow and crinkly. They ripen from green to yellow and have a lemony flavor. Scoville score = 15,000-30,000 SHU.
Bulgarian carrot peppers are tapered, like a tiny carrot. They ripen from green to orange and have a slight citrus flavor. Scoville score = 5,000-30,000 SHU.