Cayenne pepper powder is made from dried and ground cayenne peppers, which are a type of chili pepper known for their heat and vibrant red color. It’s widely used to add spice and a bit of fiery heat to dishes. In addition to its use in Cajun, Creole, and Mexican cuisines, it’s also commonly found in chili, stews, hot sauces, and even sprinkled on snacks like popcorn.