Combine all ingredients together except the wonton wrappers.
Place one teaspoon of the pork mixture on a wonton wrapper. Dip your finger in a small bowl of water and wet around the edges of the wonton wrapper so it will stick when you fold it over.
Fold the wrapper in half and seal tightly by pinching the edges together.
Heat a nonstick pan with enough sesame oil to lightly cover the pan and fry the base of the potstickers until golden brown.
Add 4 tablespoons of water to the pan and add a lid or tin foil to create a seal. Let the potstickers steam for about 5-7 minutes (keep adding water if it dries up) or until they become slightly translucent.
Serve with a bowl of soy sauce and garnish with chopped green onion.