Tentsuyu is the traditional and essential Japanese dipping sauce for all kinds of tempura. Made with just 4 ingredients, this homemade recipe is a must to elevate your favorite vegetable or shrimp tempura. Ready in 5 minutes!
Combine ¾ cup dashi (Japanese soup stock), 3 Tbsp soy sauce, 2 Tbsp mirin, and 2 tsp sugar in a small saucepan. Tip: For a quick dashi, use ¾ cup (180 ml) water plus 1 tsp dashi powder.
Bring it to a simmer and let the sugar dissolve completely. Turn off the heat and let it cool before pouring the sauce into a mason jar.
To Serve
Warm the Tempura Dipping Sauce and serve in a small individual bowl alongside your favorite tempura. If desired, grate 2 inches daikon radish (I use a ceramic grater) and gently squeeze out most of the liquid; serve a small portion to add to the sauce, as you like.
To Store
You can store the sauce in the refrigerator for up to 1–2 weeks.