A darker, spicier chile flake that carries more bite than your typical crushed red peppers or Aleppo chiles. If you're looking for a spicier chile flake with your pizza, pilaf, pasta, or salad, these Urfa biber chiles are the way to go. Crushed Urfa chile flakes rate around a 3-4 in overall heat level. Also known as Isot pepper flakes, these crushed chile flakes from the Turkish town of Urfa. Though Urfa chiles are called “red," they actually are purplish-black in color.