1 package egg roll wrappers (4 1/2" by 5 1/2") Filling: 1 pound fresh Pork (or barbecued Pork) 1 medium Onion (sliced) 2 stalks celery, cut diagonally 1/2 pound fresh Mushrooms, sliced 6 water chestnuts (fresh if possible), sliced 1/2 pound suey choy (napa cabbage), sliced thinly, 1 inch lengthwise 2 green onions, diced 1 pound fresh bean sprouts Pork Seasoning: 1 teaspoon soy sauce 1 teaspoon oyster sauce salt and pepper to taste a bit (less than 1 teaspoon) cornstarch Gravy: 4 tablespoons water 1 tablespoon cornstarch 1/2 teaspoon soy sauce 2 teaspoons oyster sauce salt, pepper, accent (if desired) to taste 2 tablespoons cornstarch mixed with 2 teaspoons cold water* 2 tablespoons oil for stir-frying 2 to 4 cups oil for deep-frying