Line a bamboo steamer with baking paper and keep an appropriately sized saucepan handy.
1. Filling Put all the ingredients in a food processor and pulse until finely ground. Chill for 30 minutes.
2. Dumplings Wet the edges of a wonton wrapping and spoon some filling in the middle. Bring the edges to the middle to resemble a purse, then seal using your fingertips. Repeat with the rest of the filling and wrappings. Arrange the dumplings on a plate and refrigerate for at least one hour.