We blend our own Za'atar, starting by toasting sesame seeds. Once cooled we mix them with sumac, thyme, oregano and salt. You will find our blend contains a high ratio of sumac compared to commercial blends. 
Mix a spoonful of Za'atar with yoghurt to make a dip. Mix with oil and brush onto flatbreads. Sprinkle over roasted potatoes or vegetables. 
Sold by the sachet containing 6 tablespoons.