GRILLED HALIBUT EN PAPILLOTE

Steps:

• 1. If you are using Napa cabbage, ignore this step. If you are using white or savoy cabbage, blanch it in boiling salted water to cover for about 2 minutes, until just tender. Rinse under cold water to stop the cooking, then drain. 2. Make a stack of 3 pieces of 3-foot-long sheets of aluminum foil (the three layers are needed for strength). Have the short end facing you and butter it halfway up to the other end. On the buttered half of the foil, place the cabbage, fish, pepper, mushrooms and tomato. Cut the 2 tablespoons butter into bits and dot the pile with it. Then scatter over the pile the mint, cilantro and lime juice. 3. Fold the unbuttered end of the foil over the pile, then fold the foil onto itself the long way. Crimp the edges as tightly as possible by making 1- or 2-inch folds, one after the other, each sealing the other. The package must be very tightly sealed, but leave plenty of room around the fish. 4. Here you have two options: a. Oil a barbecue grill and heat on direct heat. As soon as grill is smoking hot, place packets directly over heat. Packets should expand after about 4-5 minutes. Cook for 5-6 minutes after that point. b. Place a skillet large enough to fit the package over high heat. A minute later, add the oil, then pour out all but a film. Put the package directly on the skillet; it will sizzle. About 2 minutes later, the package will expand like a balloon; be careful of escaping steam. Cook for 5 to 6 minutes from that point (less for salmon, more for halibut). 5. Remove the package from the heat, still taking care to avoid any escaping steam. Let rest for 1 minute, then cut a slit along the length of the top with a knife. Use a knife and fork to open up the package, then spoon the fish and vegetables onto a plate. Top with coarse salt and serve. From Jean-Georges: Cooking at Home with a Four-Star Chef by Jean-Georges Vongerichten with Mark Bittman (Broadway Books)