Special equipment: Butcher's twine (10 to 15 inches) 1 larding needle 1 candle
Preheat oven to 450 degrees F.
Place onions, garlic, and rosemary in the bottom of a cold saute pan. Place the pig's foot in the center of the pan, with the smaller part of the foot down. Place the tomatoes along 1 side of the foot and the mushrooms along the other. Pour the pork stock and mushroom juice over the pig's foot and place the pan on the top rack of the oven. Cook for 20 to 25 minutes, basting every 3 minutes, until the skin is crisp and golden and the center is hot (approximately 145 degrees F). Once the pig's foot is ready, place it on a plate and cut the butcher's twine. Serve with boiled potatoes, if desired. While you are doing this, let sauce cook over a high flame until slightly reduced. Add the vinaigrette base, salt, pepper, and haricots verts and stir to combine. Once you have added the vinaigrette, remove from heat or the emulsification will break. Dress the pig's foot with the sauce and sprinkle with freshly ground black pepper.
Rinse the pig's foot under cold running water for 10 minutes and dry thoroughly. Use a spoon to stuff half of the pig's foot with the Stuffing. Liberally salt the foie gras and place it inside the pig's foot. Add the rest of the stuffing and pack tightly. Thread the butcher's twine through the needle and heat the tip of the needle over the candle; the hot needle will pass through the fat and skin more easily. Sew the pig's foot shut, tying it off at 1 end and then the other.
Bring the poaching liquid to a boil, add the pig's foot, and turn off the flame. Poach for 10 minutes or until pig's foot feels firm to the touch.
Heat a large saute pan over high heat until it begins to haze. Add 1 tablespoon of pork fat and the mushrooms, making sure mushrooms are in 1 even layer. Let the mushrooms sit in the pan, without movement, for 30 seconds or until a nice golden color forms. Toss the mushrooms and repeat until nicely colored. Sprinkle with salt and cook for 30 more seconds. Pour mushrooms into a sieve set over a plastic container and set aside. Deglaze the pan with a splash of water or white wine and pour over the mushrooms.
Reheat the pan over medium heat and add the rest of the pork fat. Add onions and rosemary, stirring constantly so as not to form any color. Sweat the onions until they become soft and translucent. At this point, add the garlic and cook until fragrant. Then add cubed pork meat and toss lightly until everything is combined; make sure the meat does not fall apart or you will lose some texture in the stuffing. Once everything is combined, add pig foot meat, season with salt and pepper, and turn the heat to low. As the collagen in the foot meat begins to melt, add the reserved porcini mushrooms, reserving the liquid for the sauce. Stir occasionally until everything is combined and evenly seasoned. Transfer stuffing to a plate and place in the refrigerator to cool completely.
Preheat oven to 300 degrees F.
Using a boning knife, peel the skin of the shank away from the meat until you reach the ankle. Use a saw or a cleaver to cut the bone at the ankle. Place the pig's foot and shank in a deep pan with the pork stock, carrot, onion, celery, garlic, thyme, and peppercorns and place in oven. Cook for 3 to 4 hours or until the meat is falling off the bone. Once cooked, pull the shank meat off the bone and reserve. Discard the bone. Pull the skin off the pig's foot and remove all of the bone, reserving the meat and discarding the bone.
Put the mustard, vinegar, and salt in a mixing bowl and whisk until frothy. Slowly drizzle in half of the oil while whisking constantly. Drizzle in the water and then the remaining oil, while still whisking rapidly. The vinaigrette should be light and creamy.
A viewer or guest of the show, who may not be a professional cook, provided this recipe. It has not been tested for home use.
Recipe courtesy of Chef Martin Picard, Au Pied du Cochon, Montreal, Quebec