I can't take credit for this recipe. A friend of mine who is a chef gave me this and I love it. Serve over grilled vegetables, fish and of course your favorite salad greens. One note, using a tube of the "double-concentrated" tomato paste really does make a big difference, as well as using an aged Balsamic. But I have made it with every day Balsamic and "standard" tomato paste and it still is pretty tasty. I think the rice vinegar is very important to use, and shouldn't be substituted in this recipe.