In an electric or hand grinder add large chunks of raw cut pork. Dice onion into small pieces and add to ground pork. Cover with water. Add salt and pepper, poultry seasoning and sage. Cook until water is evaporated. Meanwhile, in small saucepan, cook potato chunks until tender. Drain and mash, set aside to cool. When water has almost completely evaporated, add mashed potatoes and seasoned bread. Mix until almost completely dry. (Will become moist upon standing). Taste for flavor. If stuffing is too dry after standing add chicken or turkey broth until moistened.