Is an ancient spice and comes in it’s ground form from the sumac berries. A shrub that grows all over the Middle East. It’s tangy, lemony and vibrant in flavor and color. It’s often used in salads, fish dishes and chicken. My father in law has a few sumac shrubs. He oftens harvest the berries and sends them to the local mill to be ground before he sends them to us. It’s so vibrant and tangy.