Zaatar refers to a spice blend or a mixture of savory, thyme, sumac, and sesame seeds that is prepared and available in most most Middle-Eastern groceries. The quality of zaatar varies widely and is so versatile that it can be used be used on meats, vegetables, rice and breads. It is also known as Za'atar za'atar should be stored in a cool, dark place in a plastic zip bag or in an airtight container, if properly stored it can be used from 3-6 months