In a medium bowl, combine the finely diced tofu, chopped chives, sugar, chili sauce, soy sauce, sesame oil, and all but 1 teaspoon (5 ml / 0.2 fl oz) of the beaten egg white.
Mix until well combined.
Place about 2 teaspoons (10 ml / 0.3 fl oz) of the filling onto the center of a wonton skin.
Dip your finger in the reserved egg white and moisten the edges of the wrapper.
Fold one corner of the wonton skin to meet the opposite corner, forming a triangle. Press the edges firmly to seal, ensuring there are no air pockets.
Place the finished dumpling on a plate or baking sheet lightly dusted with cornstarch to prevent sticking.
Repeat with the remaining filling and wrappers.
Bring a large pot of water (about 3 quarts) to a rapid boil. Carefully add the dumplings in batches, being careful not to overcrowd the pot.
Boil for 3-4 minutes, or until they float to the surface and the wrappers are tender.
Remove with a slotted spoon and serve immediately with your favorite dumpling dipping sauce.
Don't overfill the wrappers.
Using about 2 teaspoons (10 ml / 0.3 fl oz) of filling is the perfect amount to ensure the dumplings seal properly and don't burst while cooking.