whisk together in a bowl a 1/2 cup Japanese rice vinegar, 2 tablespoons soy sauce, 1 tablespoon sugar, 1 tablespoon sesame oil, 2 tablespoons vegetable oil and 2 tablespoons ground sesame seeds (I love anything sesame). You can also add to this versatile dressing karashi mustard (2 tablespoons), or garlic (1 clove finely chopped), or grated ginger (1 teaspoon).