Rognons Sautés Bordelaise

Ingredients

Equipment Needed

• •30 cm (12-inch) heavy skillet
• •1 litre (1-quart) saucepan
• •Fine-mesh sieve
• •Slotted spoon
• •Warmed timbale or deep serving bowl

Instructions

1. 1

   Trim and dry

   Peel away every membrane from the kidneys, split them lengthwise, and cut out the firm white cores without gouging away the surrounding flesh. Cut the lobes into roughly 1-inch pieces, then press them between clean towels until completely dry. Keep them cold and unseasoned while you prepare the garnishes; salt added early draws out moisture and works against the sear.

   A fresh kidney smells clean and faintly mineral. If it smells strongly of ammonia after trimming, don't try to disguise it with milk or wine. Change the plan.
2. 2

   Poach the marrow

   Bring the water and ¼ teaspoon of the salt to the barest tremble in a small saucepan. Slip in the diced marrow and poach for 60 to 90 seconds, just until the pieces turn opaque at the edges but still hold their shape. Lift them gently with a slotted spoon onto a cool plate. If the edges begin to soften, chill the plate at once; boiling makes the marrow dissolve before it reaches the sauce.

3. 3

   Brown the cèpes

   Heat 1 tablespoon each of the butter and oil in a heavy skillet over medium-high heat. Add the sliced cèpes in one layer and leave them alone until their undersides bronze, then turn and cook until supple with browned edges, about 4 minutes altogether. Season with a small pinch of salt and drain them well in a sieve, exactly as the source directs; the mushrooms should bring butter and woodland depth to the sauce, not a slick of loose fat.

4. 4

   Sear the kidneys

   Wipe the skillet clean and heat it over high heat. Season the dry kidneys with the remaining salt and the pepper. Add the remaining oil and, when it glints, add the remaining butter. As soon as the butter's foam subsides, sear the kidneys in two or three uncrowded batches, about 60 to 90 seconds on the first side and 45 seconds after turning. They should be deeply browned outside and rosy rather than raw purple within. Transfer each batch to a sieve set over a bowl and let it drain. If the pan floods, lift the kidneys immediately, discard the liquid, wipe and reheat the skillet, then return only the pale pieces in a smaller batch. Ça se rattrape.

5. 5

   Assemble the Bordelaise

   Pour the prepared Sauce Bordelaise into the clean skillet or a saucepan and warm it gently. If it is thin, reduce it before adding the garnishes; if it is too tight to flow from a spoon, loosen it with a spoonful of hot water. Once it coats the back of a spoon, fold in the poached marrow, drained cèpes, and chopped parsley. Hold the sauce at a bare tremble so the marrow stays in distinct ivory dice.

6. 6

   Glaze without boiling

   Add the drained kidneys to the sauce and toss them for 20 to 30 seconds, only until every piece gleams. Never let them boil in the Bordelaise. If the sauce cools too far, lift out the kidneys, reheat the sauce alone, then reunite them off the heat; the sauce can wait another moment, but the kidneys cannot.

7. 7

   Serve at once

   Spoon the kidneys, cèpes, marrow, and every drop of sauce into a warmed timbale or deep serving bowl. A warm household bowl is the honest equivalent when no timbale lives in the cupboard. Carry it straight to the table with pommes purée or bread ready for the Bordelaise. À table!

Chef Tips

• •Mutton kidneys are the source entry's original choice. Lamb kidneys are the honest home equivalent because they're easier to find and naturally tender enough for this brief sauté; if your butcher has fresh mutton kidneys, use the same weight and cut them slightly smaller.
• •The entry begins with finished Sauce Bordelaise, and this recipe keeps that component whole. Make it separately with real stock, then measure the ⅓ imperial pint the dish requires. Red wine reduced by itself is sharp liquid, not Bordelaise.
• •Fresh cèpes are magnificent when the season gives them. At other times, frozen cèpes picked at their peak are the classical pantry's honest answer; thaw and dry them thoroughly before browning. Dried cèpes bring excellent flavour but not the same fleshy, buttered slices.
• •Ask the butcher for loose beef marrow or split marrow bones. Chill the marrow until firm before dicing, because warm marrow smears under the knife and disappears too quickly in the poaching water.
• •Serve with pommes purée, buttered noodles, or plain bread. A dry red Bordeaux with moderate tannin belongs beside it, not in a reduction made from a bottle too harsh to drink.

Advance Preparation

• •Prepare the Sauce Bordelaise up to three days ahead and chill it without the marrow, cèpes, or parsley. Reheat it gently for the final assembly; it may also be frozen in small portions for several weeks.
• •The marrow can be diced and poached several hours ahead, then kept covered in the cold. Sauté the cèpes up to two hours ahead and hold them separately so they retain their texture.
• •Trim the kidneys up to four hours ahead, arrange them between clean towels, and keep them cold and unseasoned. Once sautéed and sauced, they cannot be held without toughening.

Frequently Asked Questions

Nutrition Information

1 serving (about 200g)