Sumac has a tart flavor that is very nice sprinkled on fish, chicken, over salad dressings, rice pilaf, or over raw onions. Try substituting in any dish on which you might squeeze fresh lemon juice. If you enjoy hummus, try topping it with a sprinkling of sumac. It's delightful!
Sumac is considered essential for cooking in much of the Middle East; it served as the tart, acidic element in cooking prior to the introduction of lemons by the Romans. Sumac has a very nice, fruity-tart flavor which is not quite as overpowering as lemon. In addition to their very pleasant flavor, flakes from the berry are a lovely, deep red color which makes a very attractive garnish.
Sumac powder contains a pinch of salt.