Recipe Ingredients and Instructions to Download and Print: Vegetable Stock (PDF) Serves: 6 | Serving size: 1 cup Ingredients 1 onion, chopped 2 large carrots, chopped 2 large celery stalks, chopped Optional additional ingredients: More vegetables such as mushrooms, leeks, tomatoes, green onions, pea pods, bell peppers, asparagus Herbs or spices such as thyme, parsley,