Vegetable Soup with onion

4 cups chicken stock (homemade is best) 1 (14 1/2 ounce) can whole tomatoes , cut up and include juice 1/2 cup chopped yellow onion 1 small zucchini , chopped[...]

2 tablespoons olive oil 2 -4 garlic cloves (depending on canned tomatoes) 1 large vidalia onions or 1 large yellow onion 4 medium potatoes 2 quarts chicken[...]