Ris de Veau Doré en Croûte de Noix, Nappé d'une Émulsion de Morilles au Vin Jaune

Prepare the sweetbreads: Place sweetbreads in a bowl of cold water with a pinch of salt and soak for 30 minutes, changing the water once. Drain. Bring a pot of lightly salted water to a boil, add sweetbreads, and blanch for 3-4 minutes. Immediately plunge into an ice bath to stop cooking. Once cooled, carefully remove any membranes, veins, and fatty bits. Place the sweetbreads between two plates with a weight on top (e.g., a can) and refrigerate for at least 2 hours, or preferably overnight, to press out excess moisture and firm them up. Once pressed, cut the sweetbreads into 2-3 even portions per serving.

Rehydrate the morels: Place dried morels in a small bowl and cover with 150ml of warm water. Let them rehydrate for 20-30 minutes until soft. Carefully lift the morels out, reserving the soaking liquid. Rinse the morels gently to remove any grit. Strain the soaking liquid through a fine-mesh sieve lined with a coffee filter or cheesecloth to remove any impurities; set aside.

Prepare the walnut crust: In a small food processor, pulse the walnuts until finely chopped but not a paste. Transfer to a shallow dish and mix with the Panko breadcrumbs. Season lightly with salt and pepper. In another shallow dish, place the flour. In a third dish, whisk the egg with a tablespoon of water.

Crust and sear the sweetbreads: Season the pressed sweetbread portions with salt and pepper. Dredge each piece first in flour, shaking off excess. Then dip in the whisked egg, allowing excess to drip off. Finally, coat generously in the walnut-breadcrumb mixture, pressing gently to ensure an even crust. Heat 1 tablespoon of olive oil and 15g of unsalted butter in a large non-stick skillet over medium-high heat. Once the butter foams, add the crusted sweetbreads. Sear for 4-5 minutes per side until deeply golden brown and cooked through. Remove from skillet and keep warm on a plate lined with paper towel.

Prepare the morel emulsion: In the same skillet, add the remaining 15g of unsalted butter and 1 tablespoon of olive oil. Add the finely minced shallot and cook over medium heat until softened, about 2 minutes. Add the minced garlic and rehydrated morels, sautéing for another 2-3 minutes until fragrant. Deglaze the pan with the Vin Jaune, scraping up any browned bits from the bottom. Let the wine reduce by half. Add the reserved morel soaking liquid and the chicken or veal stock. Bring to a simmer and reduce by about one-third, until slightly thickened. Stir in the heavy cream and bring back to a gentle simmer. Remove from heat and whisk in the remaining 20g of cold unsalted butter, bit by bit, to emulsify the sauce until glossy and smooth. Season the sauce with salt and freshly ground black pepper to taste.

To serve: Slice the seared sweetbreads diagonally into thick medallions. Arrange artfully on warmed plates. Spoon a generous amount of the Morel and Vin Jaune Emulsion over and around the sweetbreads. Garnish with freshly chopped parsley. Serve immediately, perhaps with a delicate purée of celeriac or simple blanched asparagus.