Za'atar is a spice blend particularly popular in the Lebanon and Syria. Frequently used as a spread on bread. Delicious with chicken and in a whole host of dishes with the the tangy-ness of the thyme and sumach, mixed with the nutty flavour of the sesame seeds. Try a pinch on top of cheese on toast or scrambled eggs.
Za'atar probably relates to a wild marjoram herb akin to lovage and Steenbergs version of zaatar contains a complex blend of herbs - thyme , oregano, marjoram and parsley -together with sumac , toasted sesame seeds and salt. Other spellings for this blend include Zahatar and Zatr.