Question: are crushed red peppers hot?
Answer: A staple for most is cayenne pepper. That chili is obviously popular in cayenne powder form, but it's the base for many crushed red pepper recipes. ... Again, it depends on the chilies used in the mix, but with cayenne being a typical staple, you'll get a heat somewhere in the 30,000 to 50,000 Scoville heat unit range.