Aleppo peppers are moderately hot red chilies from Turkey and Northern Syria are sun-dried, seeded and crushed. Also known as Halaby pepper, Aleppo pepper, is the preferred chile used in Mediterranean cooking.
You can make an Aleppo pepper substitute or use one of these other alternatives:
We love the coarse texture and the unique flavor of this chile. We've used it as a rub on a pork tenderloin and it was great. Before using as a rub, let the pepper soak in water first (about 1 tablespoon of water per two tablespoons of pepper) allow to soak about 5 minutes until it forms a thick paste, then combine with plain Greek yogurt to make a coating for chicken, or pork or your meat of choice. Another traditional use is to add the pepper to Muhammara Syrian Hot Pepper Dip.