TO PREPARE MEAT AND MARINADE: Combine the marinade ingredients in a mixing bowl. Add all the meats and toss gently. Cover, and refrigerate overnight.

TO PREPARE VEGETABLES: Preheat the oven to 350 degrees F. Season the potatoes with salt and pepper, and lightly oil a large ovenproof casserole (preferably earthenware and with a vent hole in the lid) with olive oil. Cover the bottom of the casserole with half of the potato slices. Remove the meats and vegetables for the marinade and reserve the marinade. Arrange the mixed meats over the potatoes, and then place the vegetables in a layer over the meats. Cover with a layer of the remaining potato slices and pour the marinade over them. Add enough additional white wine or water to just cover the top of the potatoes. Place the lid on the casserole.

TO PREPARE PASTRY SEAL: Mix together the flour, water, and olive oil in a mixing bowl, and form into a rope shape long enough to wrap around the rim of the casserole. Press the dough onto the rim of the casserole. Place the lid on top of the dough and press to seal completely (this seal will prevent any of the cooking liquid form evaporating). Brush the pastry seal with egg, if a glossier look is desired.

TO COOK: Place the casserole in the oven and cook for about 3-1/2 hours. Remove the casserole and bring to the table. Cut under the lid to break the pastry seal and remove the lid. Serve the baeckeoffe out of the casserole onto warm serving plates.