The main ingredient in tzatziki is yogurt, typically made from strained Greek yogurt. This popular Mediterranean sauce is known for its cool and creamy texture, making it a perfect complement to grilled meats, pita bread, and salads. To make tzatziki, yogurt is mixed with grated cucumber, garlic, olive oil, vinegar or lemon juice, and herbs like dill or mint. The cucumber provides a refreshing crunch, while the garlic adds a zesty flavor. Tzatziki is enjoyed in various cuisines, particularly in Greek and Middle Eastern dishes, and can also be served as a dip.