Start campfire or grill so it has established coals.

Lay out 2 sheets of aluminum foil that are 12 by 12 inches as well as 2 sheets of unbleached parchment paper that are 12 by 12.

Lay 1 sheet of aluminum foil down on a counter topped with parchment. Liberally grease the parchment or if doing in the oven a 13 by 9-inch baking dish with bacon fat.

Cut the cabbage into 6 wedges, keeping the core attached so the leaves stay intact after cooking.

Lay the wedges in the greased tin foil or dish in a single layer.

Cut the Kielbasa into 1 inch long pieces and place in the foil. Add the diced onion. Cut the butter into 1/4 inch pieces and place all over the cabbage.

Season well with the salt and pepper.

Seal tightly with a layer of parchment then aluminum foil wrapping the ends tightly and place over hot coals in the fire or in the oven. Cook for 10 minutes.

Gently flip the packet and cook another 10 minutes.

Remove from heat. Once the foil is cool to the touch, unwrap and enjoy right out of the packet if desired!