thinly slice potatoes (red are best), use 2 layers of ~14″ sheets of aluminum foil, pile potatoes onto center of foil, leaving wide edges of
foil clear. Dot with lots of butter and S&P, add whole or sliced garlic cloves if desired. Could also add sliced onions if you like them.
Fold edges of foil up and crimp all edges to seal into packets. Grill over indirect heat, turning 1/2 way through, about 20-30 min. Enjoy!