A traditional Greek dip, sauce or dressing, tzatziki is prepared with grated cucumber, sour cream yogurt, olive oil and dill.
It has entered mainstream channels and applications. It can be found in mainstream fast-casual and casual chains as well as in quick-service restaurants.
Rimma_Bondarenko/iStock/Getty Images Plus
Traditional Greek wrapped sandwich gyros — pita stuffed with vegetables, beef and tzatziki.