This recipe makes a little less than a quart of dressing. The ketchup or tomato paste is completely optional, but without it, the dressing is a pale tan color which isn't as appealing as the pale pink that you'll get with the tomato product added.
Ginger-Sesame Salad Dressing
1/2 cup rice vinegar
1/2 cup vegetable oil
1/2 cup mayonnaise
1 tablespoon toasted sesame oil
1 tablespoon salt
1/8 cup sugar
4 ounces (1/2 of a small can) pineapple with its juice
1 tablespoon soy sauce
1 1/4 ounce piece of fresh ginger, peeled
1/2 package silken tofu
Tomato paste or ketchup (optional) for color
Put all ingredients in a blender and blend well. Refrigerate whatever you don't use.