Sambai-Zu (Rice Vinegar and Soy Dipping Sauce) is a traditional Japanese recipe for a classic dipping sauce of rice vinegar, dashi, sugar and soy sauce boiled together to reduce in a pan. The full recipe is presented here and I hope you enjoy this classic Japanese version of: Rice Vinegar and Soy Dipping Sauce (Sambai-Zu).
Combine the rice vinegar, niban dashi, sugar, say sauce and salt in a 1l non-reactive pan. Bring the mixture to a boil, stirring constantly, over high heat.
Immediately take the pan off the heat and set aside to cool to room temperature. Serve the sauce in individual ramekins.