Place minced pork, grated onion, water, chicken stock, ground cloves, salt and pepper in a saucepan. Simmer over medium-low heat for 90 minutes, stirring frequently. After 45 minutes, add milk and continue to cook, adding more milk if needed during cooking so it doesn't stick to the bottom of the pan. Mash while stirring, or mash to desired consistency after cooking. Chill overnight before serving.