Tzatziki is a creamy Greek yogurt-based dip or sauce that balances cooling cucumber and bright herbs with garlic and a touch of acidity. Its silky texture and refreshing flavor make it essential for mezze platters, a perfect accompaniment to grilled meats and vegetables, and an ideal condiment for gyros and pita. The dish relies on proper drainage of cucumber to prevent wateriness, creating a thick, luxurious consistency that clings beautifully to food.