Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   water
   1      tablespoon    cider vinegar
   1      tablespoon    vegetarian worcestershire
                        sauce
   1 1/2  teaspoons     sugar
   1 1/4  teaspoons     salt
     1/2  teaspoon      crumbled oregano
     1/4  teaspoon      dry mustard
     1/2  pound         fresh green beans -- cut into
   2      inch          lengths
     1/2  pound         button mushrooms -- halved
   2      medium        zucchini -- sliced
   2                    tomatoes -- cut in wedges

Preparation:

Combine first 7 ingredients in pan and heat to a boil. Add beans and return to boil; reduce heat. Cover and simmer 5 minutes. Add mushrooms and zucchini; cover and simmer 3 minutes. Add tomatoes; cover and simmer 1 minute. Serve hot. To serve cold, do not cook tomatoes. Cover and refrigerate after cooking other ingredients, adding tomatoes just before serving.