The main ingredient in a traditional tzatziki sauce is Greek yogurt. Tzatziki is a refreshing dip or sauce commonly found in Mediterranean and Middle Eastern cuisines, particularly Greek. The use of Greek yogurt provides a thick, creamy texture and tangy flavor that forms the base of the sauce. Alongside yogurt, tzatziki typically includes grated cucumber, minced garlic, olive oil, vinegar, lemon juice, and fresh herbs like dill or mint. This combination creates a cool and flavorful condiment often served with grilled meats, pita bread, or as a component in various dishes, making it a popular choice for enhancing flavor profiles.