To make filling, combine chicken, 1 tablespoon of the soy sauce, 2 tablespoons TABASCO® SWEET & Spicy Sauce, garlic, ginger, sesame oil, egg white, and water chestnuts in a large bowl; mix well using your hands or a large wooden spoon. Refrigerate until ready to make dumplings.
Combine the remaining 4 tablespoons soy sauce, 2 tablespoons TABASCO® SWEET & Spicy Sauce, and vinegar in a small bowl and set aside until ready to serve.
Place a scant tablespoon of chicken filling in the center of a won ton wrapper; wet edge of wrapper with water and fold in half diagonally to make a triangle. Press edges together and place dumpling on a plastic wrap-lined baking sheet. Repeat with remaining filling and wrappers. Dumplings can be frozen at this point for up to 3 weeks.
To cook dumplings, place a steamer rack in a large pot with 1/2 inch of water in it, or set up a bamboo steamer in a large frying pan. Line steamer rack with lettuce leaves, or lightly oil bamboo trays with sesame oil, and bring water to a boil. Arrange dumplings side by side, not touching, on rack. Cover and steam 12 minutes. Serve hot with dipping sauce.
Makes 35 dumplings.