Pick the closest match for your use: direct-flake swaps (Urfa biber) for sprinkling and finishing, or spice blends when you need tangy depth in cooking.
Start with the ratio listed in the WPRM table: use the full amount for the direct swaps, or reduce first when the substitute is hotter (like cayenne).
If your substitute is flatter (often paprika-based), add a tiny “brightness” boost (lemon zest or a sour dry tang like sumac) before serving.
Taste after the first simmer/saute turn (or after mixing into a sauce) and adjust heat in small pinches—Aleppo’s balance is subtle.