In a large saucepan, mix together the minced pork, cloves, cinnamon, onion, salt, celery, bay leaf and water. The water will help break up the raw pork. Simmer over medium-low heat for about 3 hours, or until the water has evaporated. Remove from the heat and discard the bay leaf.
Towards the end of the pork cooking time, place the potatoes into a separate saucepan and fill with enough water to cover. Bring to a boil and cook until tender, about 10 minutes. Drain and mash potatoes. When the pork is done, stir the mashed potatoes into that pan until evenly blended.
Preheat the oven to 190 degrees C (375 degrees F). Line two 24cm (9 inch) pie tins with bottom crusts. Spoon equal amounts of the pork filling into each crust. Cover with top crusts and flute the edges to seal.
Bake for 45 minutes in the preheated oven, or until crust is golden brown.