Mix half of the chives and all of the filling ingredients together. Spread 1 heaped tbsp of filling onto each wonton skin and spread out a little. Bring the wrapper up and around the pork until you have a small, firmly-packed dumpling with an open top. Repeat with the rest of the mix. Can be made up to a day ahead. Steam the dumplings for 10 mins until the wrappers are translucent. Top with remaining chives and serve with dipping sauce.