Developed by Denmark pepper grower Jes Christiansen, the Thunder Cacho Brown pepper is a cross that looks like a long, brown, skinny Cayenne. It can be used in sauces, stir fry, and as a dried seasoning. It has a mild to medium heat level and fruity smoky flavor tones. The Thunder Cacho Brown pepper averages about 20,000 to 50,000 Scoville Heat Units.