Mix meat, salt, pepper, soy sauce, sesame oil, and corn starch (cornflour) together in a bowl.
Layout a wonton wrapper. Place about 1 teaspoon of meat mixture in the center.
Brush a little water on the wrapper, around the meat to the edges. Bring all the sides of the wrapper up around the meat. Pinch together to seal. You can tie a long strip of green (spring) onion around if you wish.
Alternatively, you can fold the wrapper diagonally to form triangles.
Continue wrapping until all meat is used.
Preheat vegetable oil in deep-fryer or large saucepan* to 180C/350F.
Gently place the wontons into the hot oil. Cook in batches so that they do not overlap.
Fry for until crispy and golden.
Remove with tongs or a slotted spoon and let cool on paper towels.
Serve immediately with sweet chili or sweet and sour sauce on the side.