Lay the Aluminum foil on a flat surface and put one cabbage wedge sprinkle lightly with Tabasco, salt and pepper, a pat of butter, and drizzle lightly with olive oil. Repeat on the other side. Next, put two pieces of the onion and close the foil packet. Repeat three more times and place it on the grill. Ready in 25 minutes turning once. Serve with Chicken and Cooked Kale.