Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
    1/4   cup           onion,. chopped
    1/4   cup           peanut oil
      2   Tablespoon    rice wine vinegar
      2   Tablespoon    water
      1   Tablespoon    fresh ginger root, chopped
      1   Tablespoon    celery, chopped
      1   Tablespoon    soy sauce
  1 1/2   Teaspoon      tomato paste
  1 1/2   Teaspoon      sugar
      1   Teaspoon      lemon juice
      1   dash          salt
      1   dash          pepper

Preparation:

Combine all ingredients in blender of food processor. Process until almost smooth.