Tzatziki is one of the classic Greek sauces. Tzatziki, cacık, or tarator is a dip, soup, or sauce found in the cuisines of Southeast Europe and the Middle East. It is made of salted strained yogurt or diluted yogurt mixed with cucumbers, garlic, salt, olive oil, sometimes with vinegar or lemon juice, and herbs such as dill, mint, parsley and thyme.