Fairly recently, I've taken to roasting meat and potatoes on very short backpacking trips. My definite preference is to lay the meat directly on clear, oak coals, and bury the potatoes in fire without foil wrapping.

A couple of my more fastidious friends object to this caveman cooking style.. So I've just obtained an acceptably small and light backpacking grill, at no cost, from a busted toaster oven. They can carry the thing.