Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
    1/2   cup           Soybean oil
    1/2   cup           Celery; chopped
    1/4   cup           Onion; chopped
  2       Tablespoon    apple cider or White vinegar
  1       Tablespoon    Tomato paste
  1       Tablespoon    Soy sauce
    1/2   Teaspoon      Ground ginger
    1/2   Teaspoon      Salt

Preparation:

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