Never making sweet potato wedges any other way! These sumac sweet potato wedges were a hit. Sumac is a spice popular in Middle Eastern cuisine that gives a tart flavor and works well with chicken, potatoes, and in salad dressings. You can find it at international markets or online. The sriracha aioli is made by mixing ketchup, avocado oil mayo, and sriracha, and came out so good with the wedges!