The primary ingredient in traditional Greek tzatziki sauce is yogurt, typically made from strained Greek yogurt. This creamy and tangy sauce is complemented with ingredients such as grated cucumber, garlic, olive oil, vinegar, and fresh herbs like dill or mint. Tzatziki is a staple in Greek cuisine and often served as a dip or sauce alongside various dishes, including grilled meats, pita bread, and salads. Its refreshing taste and texture make tzatziki a popular accompaniment that adds a bright flavor contrast to savory meals.