Barolo Braised Osso Buco with Porcini and Black Truffle | Ossobuco Brasato al Barolo con Porcini e Tartufo Nero
This is osso buco moved out of Lombardy and put to work in Piedmont. The cut is the same, a thick cross section of veal shank with the bone at its centre, but everything around it changes: no white wine, no gremolata, no lemon. In their place go a bottle of Barolo, dried porcini with their soaking water, and black truffle grated over the plate.
Four slices, one heavy pan, three hours of very low heat. None of it is difficult, but the dish is unforgiving about one thing: how the pan is managed. A shank cut into rounds is a fragile shape held together by connective tissue that is dissolving, and the distance between four intact slices on the plate and a pan of shredded meat is a matter of how they are arranged, how deep the liquid runs, and when the sauce is reduced. The Barolo is reduced before it meets the meat, the porcini water becomes the backbone of the braise, and the truffle never sees heat.
Yield: 4 servings. Prep: 40 minutes. Cook: 3 hours 15 minutes. Rest: 15 minutes. Total: about 4 hours 10 minutes. Difficulty: intermediate to advanced. Course: secondo piatto. Region: Piedmont, Langhe and the Alba hills.
The Story
Osso buco means hollow bone, and the cut is older than any recipe attached to it. A veal shank sawn across the bone is the butcher's answer to a working animal's hardest muscle: too sinewy to roast, too good to mince, and cheap for most of the last two centuries. Cutting it into rounds rather than boning it out was an economy of labour, and the bone stays in because taking it out costs time. The marrow turned out to be the best part.
The Barolo version comes from a different landscape than the Milanese one. In the Langhe, where Nebbiolo has grown on the marl slopes around Barolo and Serralunga since long before the wine carried a name, a braise made with the local red was ordinary household economy. What lifted it above thrift was the autumn, which in those hills brings the porcini of the chestnut woods and the truffles of the Tanaro valley at the same moment.
Black truffle was the everyday one here, shaved over eggs while the famous white went to market. Pairing it with porcini was no chef's idea but a seasonal coincidence: both arrive after the first rains and taste of the same woodland floor.
Ingredients
For the veal
Veal shank, cut crosswise into 4 slices about 2 in (5 cm) thick, 3 1/2 lb (1.6 kg) total
Fine sea salt, 2 tsp (12 g)
Freshly ground black pepper, 1 tsp (2 g)
All purpose flour, 1/3 cup (40 g), for dusting
Extra virgin olive oil, 3 tbsp (45 ml)
Unsalted butter, 2 tbsp (28 g)
Kitchen twine, 4 lengths of about 16 in (40 cm)
For the braising liquid
Barolo DOCG, 1 bottle, 3 cups (750 ml)
Dried porcini mushrooms, 1 1/2 oz (40 g)
Warm water, 2 cups (480 ml), for soaking the porcini
Veal or beef stock, unsalted, 2 cups (480 ml)
Yellow onion, finely diced, 1 large, about 7 oz (200 g)
Carrot, finely diced, 1 medium, about 3 oz (85 g)
Celery, finely diced, 2 stalks, about 3 oz (85 g)
Garlic cloves, crushed, 3
Tomato paste, 1 1/2 tbsp (25 g)
Bay leaves, 2
Fresh rosemary, 1 sprig
Fresh thyme, 4 sprigs
For the fresh porcini
Fresh porcini, firm and dry, 8 oz (225 g)
Extra virgin olive oil, 1 tbsp (15 ml)
Unsalted butter, 1 tbsp (14 g)
Garlic clove, whole, 1
Fine sea salt, 1/4 tsp (1.5 g)
For finishing
Fresh black truffle, 1/2 oz (15 g)
Unsalted cold butter, 1 tbsp (14 g), for the sauce
Flat leaf parsley, finely chopped, 1 tbsp
Extra virgin olive oil, a few drops per plate
Preparation
Step 1
Soak the porcini and reduce the wine. Cover the dried porcini with warm water for 30 minutes, lift them out, squeeze them lightly and chop them coarsely. Filter the soaking water through paper, stopping while the last tablespoon and its sand are still in the bowl. Separately, simmer the Barolo down to about 1 1/2 cups (360 ml), driving off the alcohol and the raw tannic edge.
Step 2
Tie and season the shanks. Run a length of twine around the circumference of each slice and tie it firmly, so the ring of meat is held against the bone and cannot open out as the connective tissue softens. These are the five most useful minutes in the recipe. Pat the slices dry, season both faces, dust them in flour and knock off all that is not clinging.
Step 3
Sear the veal. Heat the oil and butter in a wide heavy pan until the foam subsides. Lay the slices in with space between them and leave them 4 to 5 minutes a side, until deeply browned, standing them on edge with tongs to colour the rim. Work in two batches if four will not fit. Pour off burnt fat, keep the residue.
Step 4
Build the base. Add the onion, carrot and celery with a pinch of salt and cook 10 to 12 minutes until soft and barely coloured. Stir in the garlic and the tomato paste for 2 minutes, pressing the paste against the hot metal until it turns from bright red to brick, then add the soaked porcini for a minute more.
Step 5
Assemble the braise. Pour in the reduced Barolo and let it bubble 2 minutes, then add the filtered porcini water, the stock, the bay, rosemary and thyme. Return the shanks flat in a single layer, never overlapping, and adjust the liquid so it reaches two thirds of the way up the meat. Bring it to the barest simmer.
Step 6
Braise low and slow. Heat the oven to 300°F (150°C). Cover the pan with the lid slightly ajar, or with foil pierced by one small hole, and give it 2 1/2 to 3 hours, basting the exposed tops every 40 minutes. It is ready when a knife tip meets no resistance and the tissue around the bone is translucent.
Step 7
Lift out the meat, then reduce. Move the shanks to a warm dish with a wide spatula under each and a second on top, cover loosely and rest 15 minutes. Only now reduce the sauce: discard the herb stalks and reduce over medium heat for 10 to 15 minutes until it coats a spoon, then whisk in the cold butter off the heat.
Step 8
Cook the fresh porcini and finish. Clean the fresh porcini with a brush and a barely damp cloth, never under the tap, and cut them into thick slices. Heat the oil and butter with the garlic clove until hot, lay the porcini in one layer and leave them 2 minutes to colour, then toss and give them 2 more, salting at the end.
Plating
Use warm deep plates, not flat ones: the sauce is generous and a rim keeps it where it belongs. Warm them to around 140°F (60°C) and no hotter, since a scorching plate carries on cooking the meat and drives off the truffle aroma.
Cut the twine away and set one slice in the centre of each plate with the bone upright so the marrow stays reachable. Spoon the sauce around the meat and over the bone rather than flooding the plate, set the sautéed porcini against one side of the shank, and scatter the parsley over the sauce, not the meat.
Grate the truffle at the table, or in the last second in the kitchen: its aroma is short lived and every minute costs something. Give each guest a small spoon for the marrow, and serve soft polenta or boiled potatoes beside it.
Professional Technique
The whole technical difficulty of this dish sits in the management of the pan, because a braise made from slices behaves nothing like a braise made from one whole piece. Four rounds of shank must lie flat on the base in a single layer, each with space around it, never stacked and never overlapping. A slice resting on another is insulated from the base, so it comes up to temperature late and stays behind for the full three hours, and the two faces in contact steam instead of braising. If the pan will not take four side by side, use two pans.
The depth of the liquid is the second decision, and two thirds of the height of the meat is the figure. That level gives two cooking environments in one pan at once: the submerged part braises in the wet, collagen rich way that turns connective tissue into gelatin, while the part standing above keeps colouring in the dry heat of the oven and holds the roasted flavour of the sear. Cover the slices entirely and you lose that colour and the sauce comes out pale; leave them too shallow and the exposed meat dries to a crust.
The lid governs how much of that liquid leaves, and it belongs slightly ajar, or replaced by foil pierced with a single small hole. A tightly sealed pan returns every drop of condensation, so you finish three hours later with as much thin liquid as you began with. A pan left fully open loses too much too fast, the level falls below halfway and the exposed meat bakes. A small controlled gap lets just enough vapour escape to concentrate the wine and the mushroom water while the level drops slowly, and basting keeps the exposed surfaces glossy.
The last rule is the one most often broken. The sauce is reduced only after the meat is out of the pan, never with the slices still in it. Reducing with the shanks in place means twenty more minutes of heat on collagen that has already converted, and that is precisely when the slices lose their shape. Lift them out, rest them, then reduce hard in a pan where nothing can break. The truffle follows the same logic in reverse: grated over the plate with the heat off, because its aroma rides on compounds that heat destroys in seconds.
Texture and Moisture Control
Veal shank is roughly a third connective tissue, and that collagen is the point of the cut. It starts converting to gelatin at around 160°F (70°C) and needs hours there to finish, which is why a braise held at 300°F (150°C) works and a hard boil does not: rolling liquid squeezes water out of the fibres faster than gelatin can replace it, and the meat ends up dry and falling apart at once. That gelatin also gives the sauce its body, so there is nothing to thicken.
The rest is a set of separate moisture problems. The shanks must be bone dry before flouring or the coating turns to paste and refuses to brown. The fresh porcini must never be washed, because they act like sponges and waterlogged mushrooms stew instead of colouring. The sauce must stop while it still flows off a spoon, since a gelatin rich liquid sets hard as it cools.
Professional Mise en Place
Almost everything here is done ahead and the braise improves overnight. Only the fresh porcini, the reduction and the truffle belong to service.
Equipment and tools
Wide heavy pan holding 4 slices flat in one layer
Second saucepan for reducing the wine
Paper filter and fine mesh sieve for the porcini water
Two wide spatulas, twine, tongs
Truffle slicer, soft brush for the porcini
Prepared ahead
Whole braise, refrigerated 1 to 2 days ahead, sauce unreduced
Barolo reduced and cooled, up to 3 days ahead
Porcini soaked, water filtered, up to 1 day ahead
Vegetables diced fine, on the day
Shanks tied and seasoned, cold on a rack, up to 6 hours ahead
Service setup
Shanks warm and resting, twine on until plating
Sauce reducing in an empty pan, cold butter beside it
Frying pan hot and dry, porcini sliced
Plates warm at 140°F (60°C), truffle unwrapped last
Marrow spoons and parsley within reach
Chef Tips
Ask the butcher for centre cut shank and slices a full 2 in (5 cm) thick. Thin slices are the commonest cause of a collapsed osso buco, since there is not enough meat around the bone to survive three hours, and a thick slice also gives a wide ring of marrow.
Do not put a great bottle of Barolo in the pot. Reduction concentrates structure and tannin, not nuance, and the perfume you pay for evaporates in the first minute. Keep the interesting bottle for the glass.
Cook it the day before. Held overnight in its liquid the meat reabsorbs moisture and the flavour settles, and cold firm slices are far easier to lift out than hot fragile ones. Chill it all together, lift off the fat cap, then warm the shanks in a little of the liquid.
Judge truffle by smell, never by size or price. One that does not fill your hand with wet earth the moment it is unwrapped will contribute nothing to a plate this rich. Keep it in a closed jar on paper towel, changing the paper daily, and use it within five days.
Common Mistakes
Overlapping the slices in the pan. Meat resting on meat steams instead of braising and loses the seared colour on every covered face. Four slices flat in one layer, or two pans.
Covering the shanks completely with liquid. That is boiling, not braising. The exposed upper surface keeps building colour across three hours, and submerging it gives a pale watery sauce. Two thirds of the way up is the level.
Sealing the pan tight. A closed lid recycles every drop of steam, so the liquid never concentrates and the sauce needs punishing reduction later. Leave the lid ajar or pierce the foil once.
Reducing the sauce with the meat still in the pan. Extra heat on collagen that has already converted is what makes the slices disintegrate. Lift the shanks out, rest them, and reduce in an empty pan.
Adding the truffle to the hot sauce. Its aroma vanishes within seconds of hitting heat, leaving expensive texture and no smell. Grate it over the plate, off the heat, at the last moment.
Wine Pairing
Barolo DOCG: The wine in the pot and the natural bottle on the table, though not the same one. Open one with eight or ten years behind it: the tannin has softened into something that still cuts the gelatin and the marrow fat without drying the palate, and the tar, rose and dried cherry of age run alongside the porcini.
Barbaresco DOCG: The same grape on the softer marl of the Tanaro side, and the more elegant choice. Slightly less tannic grip, noticeably more aromatic lift, which is the right trade when truffle is on the plate, since truffle wants a wine that stays out of its way.
Gattinara DOCG: Nebbiolo on acidic volcanic soil in northern Piedmont, and the most mineral of the family. Leaner and more austere than Barolo, with an iron and smoke character that latches onto the browned surfaces, and firm acidity that slices through a butter finished sauce.
Nebbiolo d'Alba DOC: The everyday bottle of the same hills, for when the braise is a weeknight dinner rather than an occasion. Lighter in tannin and shorter in the finish, it keeps the red cherry fruit and bracing acidity that matter most here, and will not overpower veal, a leaner meat than the wine list suggests.
Valtellina Superiore DOCG: Nebbiolo from the terraced slopes of Lombardy, where it is called Chiavennasca, and a different reading of the pairing. Altitude gives it a slender high toned profile with sharp acidity and fine grained tannin, and that lightness works against the mushroom reduction by cleaning the palate instead of matching weight with weight.
Storage & Reheating
This is genuinely better the next day. Cool the shanks in their unreduced braising liquid, transfer them to an airtight container and refrigerate up to 3 days. Keeping the meat submerged is the trick, since shank stored out of its liquid dries within a day. The fat sets into a firm cap overnight, which seals the braise and lifts off easily.
Reheat in a low oven at 300°F (150°C) for 25 to 30 minutes, or put the shanks with enough liquid to come halfway up them into a covered pan over the lowest flame for 20 minutes. Never use a microwave and never let it boil, since either pulls the slices apart. Then lift them out and reduce the liquid as on the first day.
The braise freezes for up to 3 months, again fully covered by unreduced liquid. Thaw it overnight in the refrigerator, never at room temperature, and expect a softer texture. Fresh porcini and truffle do not freeze usefully, so cook and grate them fresh.
Nutrition
Per serving, based on 4 servings, one shank slice with sauce and mushrooms:
Calories: 690 kcal
Total Fat: 34 g
Saturated Fat: 13 g
Trans Fat: 0.5 g
Unsaturated Fat: 19 g
Cholesterol: 235 mg
Sodium: 780 mg
Total Carbohydrates: 22 g
Fiber: 4 g
Total Sugars: 7 g
Added Sugars: 0 g
Protein: 62 g
Lactose: 0.6 g
Principal micronutrients: iron, zinc, selenium, phosphorus, vitamin B12, niacin, riboflavin, potassium
These figures are estimates. Almost all the alcohol evaporates during the reduction and the braise, and the final fat depends on whether the cap is lifted off.
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