Salt (to taste) See vegetable stock recipe or use Vegetarianstyle instant bouillon. For each cup of vegetable stock specified in recipe, dissovle 1 teaspoon vegetable-flavored granules or 1 cube vegetable stock base in 1 cup boiling water. Cut in matchstick pieces, or 1/2 cup sliced water chestnuts. (including tops) Cut into 1-inch diagonal slices. Cover mushrooms with water and let stand for 30 minutes. Remove mushrooms; cut off and discard stems. Thinly slice mushrooms and set aside. Measure soaking water (discard any sandy portion at the bottom) and add enough stock to make a total of 4 cupcs liquid. Place in a 2-quart pan and add sherry, bamboo shoots, and sliced mushrooms. Bring to a boil, then reduce heat; cover and simmer for 15 minutes. Add tofu, peas, white vinegar, and soy; heat for 3 minutes. In a small bowl, stir together cornstarch and the 1/4 cup water. Add to soup and cook, stirring, until slightly thickened. Turn off heat. Add pepper and seasameoil. Stirring continuously, slowly pour egg into soup. Sprinkle with onion; add salt to taste. Makes four 1-1/2 cup servings. Per serving: 6 gram protein, 10 grams carbohydrates, 63 milligrams cholesterol, 95 calories.