A reflector oven cooks by directing a campfire's heat down toward a cooking shelf that holds the food. You can buy a traditional reflector oven and use it time after time, or you can make your own from aluminum foil. First, cut two branched sticks about 20 inches below the Y. Drive them into the ground at the edge of the fire ring, 18 inches apart. Wrap a 22-inch-long stick with heavy-duty aluminum foil, place it in the forks of the Y-sticks, and unroll foil at a 45-degree angle away from the fire to the ground. Anchor the foil with another stick and unroll a shelf of foil toward the fire. Tear off the foil. Place four dry rocks on the bottom of the shelf. These will hold the baking rack or pan. To create the oven sides, wrap one of the upright Y-sticks with foil. Unroll the foil around the back of the oven. Tear off the foil. Repeat on the other side. Pinch the two pieces of foil together. To broil fish, line a baking pan (or simply use the bottom shelf as the baking pan) with onion slices. Add the fillets, seasoned with lemon juice, salt, and pepper. An easy way to punch it up is to slather with store-bought chipotle sauce. Top with a few more onion slices. Flip once, and cook until fish flakes with a fork.

Dan Marsiglio