The primary ingredient in tzatziki sauce is yogurt. Traditionally, Greek yogurt is used, giving tzatziki its creamy texture and tangy flavor. The yogurt is typically mixed with finely chopped cucumbers, garlic, olive oil, lemon juice, salt, and various herbs, such as dill or mint. Tzatziki is a popular condiment in Mediterranean cuisine and is often served with grilled meats, pita bread, or as part of mezze platters. Its refreshing qualities make it a favored accompaniment, especially in warm weather, and it serves as an excellent base for various flavorful dishes.