Fattush belongs to the family of dishes known as fattat (plural of fatteh), which use stale flatbread as a base.
Fattoush includes vegetables and herbs varying by season and taste. The vegetables are cut into relatively large pieces compared to tabbouleh which requires ingredients to be finely chopped.
Tanner's sumac is usually used to give fattoush its sour taste.
Wright, Clifford A. (2003). information Title Little foods of the Mediterranean: 500 fabulous recipes for antipasti, tapas, hors d'oeuvre, meze, and more (Illustrated ed.). Harvard Common Press. ISBN1-55832-227-2.