3 potato truffled cod Recipes

unsalted butter, room temperature, cut into 12 pieces, baking potatoes, peeled and sliced thin lengthwise, kosher salt, fresh ground black pepper, cod fish fillets, black truffle, sliced very thin, good italian red wine, shallots, minced, stem fresh thyme, heavy cream, sugar, leeks, white only , cut into thin strips, 2 inches long

salt cod, yellow onion, garlic cloves chopped, celery stalk, bay leaf, white wine, russet potato peeled and diced, heavy cream, butter unsalted, white truffle oil plus a little more to drizzle on top