天つゆ is a traditional Japanese dipping sauce commonly served with tempura, a dish consisting of battered and deep-fried vegetables and seafood. This sauce is typically made from a mixture of soy sauce, mirin, and dashi, giving it a savory and slightly sweet flavor that complements the crispy texture of tempura. The preparation of 天つゆ is simple, often involving the combination of equal parts soy sauce and mirin, along with a small amount of dashi for added depth. It is usually served warm or at room temperature, enhancing the overall dining experience by balancing the richness of the fried food.