Ponzu is a Japanese sauce traditionally thought of as a dipping sauce with dishes like sashimi and with one-pot dishes like Chirinabe, but it has recently found its own place in the Western pantry. The unique flavor of Ponzu sauce is adaptable to just about any dish. Its blend of sweet, sour, salty (and bitter) flavors go equally well with grilled meats, seafood and plain rice.
Heat soy sauce in a pan until it just begins to simmer. Add the bonito flakes to the soy sauce, remove from heat and allow to cool. Strain the cooled soy sauce and mix with the vinegar and yuzu juice. Serve in a small, shallow bowl.
Makes 4 servings.