In the Sumac

"Sumac is a very popular condi­ment in Turkey and Iran, where the ground fruits are liberally sprinkled over rice. Mixed with freshly cut onions,  it is fre­quently eaten as an appetizer. The well-known Turkish fast food specialty döner kebap is sometimes flavored with sumac powder."

Frankly I never thought much about the sumac berries. One is  to dazzled by the brilliant orange & red. I also did not know the name is sumeric, and means dark red.