-removed, rinsed and drained FILLING: Place the shrimp in a linen dish towel or on paper towels and squeeze out as much moisture as possible. Chop the shrimp to a paste in a food processor fited with a steel blade or by hand. Place the water chestnuts in a towel and squeeze out as much moisture as possible. Place the shrimp paste, water chestnuts, soy sauce, rice wine, sesame oil, salt, pepper, ginger, scallions and egg white in a mixing bowl. Using your hand or a spoon, stir vigorously in one direction to combine the ingredients evenly. Add the cornstarch and stir to blend. The mixture should be stiff. Use a fork, teaspoon or two chopsticks to place a scant teaspoonful of the filling in the center of each wonton skin. Gather the edges of the skin together around the filling and squeeze to form a "waist" as you gradually remove the fork, teaspoon or chopsticks. Squeeze the "waist" and the ends shut to enclose the filling. The finished dumpling should look like a drawstring purse. Place the finished dumplings on a tray that has been lightly dusted with cornstarch. Heat 3 litre of water to boiling in a large pot. Add the wontons and cover. Once the water is boiling again, cook for about 4 minutes or until they rise to the surface. Remove with a long-handled strainer and drain. Discard the water. Heat the chicken stock, salt and sesame to boiling. Add the spinach and cooked wontons and portion into serving bowls. Serve. Makes 4 servings. Per Serving: 82 Calories, 9 g Protein, 6 g Carbohydrates, 2 g Fat, .4 g Saturated Fat, 44 mg Cholesterol, 494 mg Sodium. [Nina Simonds, The Washington Post; Jan 29 1992]