ZA'ATAR (ZAHATAR or ZAHTAR) is a Middle Eastern blend. Each country has its own variation, but generally it contains: THYME, SUMAC, ROASTED SESAME SEEDS and salt (ours does not contain salt - so that you can add your own).
It is herbaceous and sour and earthy and nutty.
ZA'ATAR is used as a condiment to sprinkle on grilled pita with olive oil or on salads. You can also use it in soups and it works well on grilled fish.