In a food processor or blender, pulse shrimp until finely chopped. Transfer to large bowl and mix in onions, egg white, coriander or cilantro, soy sauce, ginger, and sesame oil; mix well.
Lightly dust a baking sheet with cornstarch. Unwrap wontons and keep covered with a moist cloth. Fill wontons one at a time. Place 1 teaspoon of shrimp filling on one side of wonton wrapper. Moisten edges with water. Fold wrapper diagonally over filling to form a triangle. Firmly press to seal sides. Place on baking sheet.
Bring a large pot of water to a boil. Add the prepared wontons, six at a time. When wontons rise to the surface (about 3 minutes) remove with a slotted spoon. Place on a tray in a single layer, cover and keep warm. Cook remaining wontons.
Serve warm or room temperature with Dipping Sauce.
In a small bowl, stir together soy sauce, sugar, and chili flakes.
Shrimp Won Tons Recipe: https://whatscookingamerica.net/Appetizers/ShrimpWonTon.htm