Excellent Foods Za'atar Powder is used in practically everything in Middle Eastern cuisine, it is used as a seasoning for meats and vegetables or sprinkled onto hummus, Sumac Powder is great for adding acidity, brightness, and color to many dishes, including grilled meats and vegetables, grains, baked goods, and desserts. People frequently use it to enhance the flavor of spice rubs, sauces, and dressings.