COMBINE ALL INGREDIENTS except butter. If using a meat grinder, fit it with a medium die. If using a food processor, put only a small quantity in the work bowl at a time and pulse carefully so the mixture doesn't turn into a paste. Repeat until all mixture is ground; then mix the separate batches together well. Form the ground meat into patties. To cook the sausage, melt the butter in a large skillet over medium heat on the stove and cook the patties 2-to-3 minutes on each side. Makes 12 to 16 Patties