Italian Cardoon Gratin with Turin Breadsticks | Cardi Gratinati con Fonduta di Castelmagno e Grissini Torinesi
Cardi gratinati is what a Piedmontese winter kitchen does with the cardoon, a thistle that looks like giant celery and tastes like artichoke heart crossed with salsify. Here tender ribs sit under a fonduta of Castelmagno DOP and a crust of crushed grissini torinesi, so every spoonful gives soft, creamy and crunchy at once.
Serves 6. Prep: 40 minutes. Cook: 1 hour 45 minutes. Rest: 8 minutes. Difficulty: intermediate. Course: contorno or antipasto. Region: Piedmont.
The Story
The cardoon Piedmont considers its own is the cardo gobbo di Nizza Monferrato, a Slow Food Presidium grown in the sandy soil around Nizza and Canelli. In autumn growers bend the stalks over and bury them in earth, and the blanched, hunched ribs, the gobbo or hunchback that gives the variety its name, are dug up for the winter holidays. They are pale, tender and faintly sweet, and for generations they have been the vegetable of the Christmas table, most often dipped in bagna cauda. Nizza still celebrates them every November with a fair devoted to the cardo gobbo.
Castelmagno comes from the opposite side of the region, from the high Grana valley above Cuneo, where the villages of Castelmagno, Pradleves and Monterosso Grana still make it. Documents mention it as far back as the thirteenth century, when it was accepted as payment of feudal dues, and it earned its protected designation in 1996. Made from cow's milk, sometimes with a little sheep or goat, and aged for a few months, it is crumbly, pale and lightly veined, with a tang of sourness and mountain grass that softens beautifully once it melts. The best wheels come from summer pastures above 5,000 feet.
The grissino completes the triangle. Tradition credits a Turin baker, Antonio Brunero, with shaping the first thin breadsticks around 1679 for the young Duke Vittorio Amedeo II, on the advice of a court physician who wanted bread the delicate child could digest. Napoleon, so the story goes, loved them enough to send couriers to Turin. Every trattoria in the city still puts a glass of them on the table.
Gratinating vegetables under a cream sauce is an old habit of the Piedmontese cook, who spent long winters with cellar vegetables and good cheese. Cardoon from the Monferrato hills, cheese from the Alps and bread from the capital: this gratin is Piedmont laid out in one dish, and it has always been a dish for the coldest weeks of the year. In the Langhe and Monferrato farmhouses the cardoon was boiled on Saturday, gratinated with whatever cheese was in the cellar, and eaten hot on Sunday after Mass. The version here keeps that logic and only refines it: a smoother sauce, a proper crust and a cleaner cardoon. It is a humble dish that rewards care, and it tastes best in December, when the first hunched ribs reach the market.
Ingredients
Quantities serve six as a side dish or a light first course. Choose firm cardoons and a Castelmagno that is young and crumbly rather than aged and sharp.
For the cardoons
Cardoons, 3 lb (1.35 kg) before trimming, ideally cardo gobbo di Nizza Monferrato
Lemons, 2 large
Cold water for the bowl, 2 quarts (2 L)
Cold water for the cooking bath, 4 quarts (4 L)
All purpose flour, 2 tbsp (16 g), for the cooking bath
Fine sea salt, 1 tbsp (18 g)
Unsalted butter, 2 tbsp (28 g), for sautéing
Garlic, 1 small clove, halved
Anchovy fillet in olive oil, 1, optional, mashed into the butter
For the fonduta
Castelmagno DOP, 5 oz (140 g), crumbled
Whole milk, 1 3/4 cups (420 ml)
Heavy cream, 1/2 cup (120 ml)
Unsalted butter, 3 tbsp (42 g)
All purpose flour, 2 tbsp (16 g)
Freshly grated nutmeg, 1/8 tsp
White pepper, freshly ground, to taste
Fine sea salt, 1/2 tsp (3 g), or to taste
For the crust
Grissini Torinesi, 5 oz (140 g)
Unsalted butter, melted, 2 tbsp (28 g)
Parmigiano Reggiano, finely grated, 2/3 cup (60 g)
Fresh thyme leaves, 1 tsp
Soft butter for the dish, 1 tsp
For finishing
Toasted Piedmont hazelnuts, chopped, 1 tbsp
Flat leaf parsley leaves, chopped, 1 tbsp
Extra virgin olive oil, a few drops, optional
Preparation
Clean the cardoons
Fill a large bowl with the cold water and the juice of one lemon. Cut off the leaves and the tough, woody base, then snap each rib into 4 inch (10 cm) lengths. Strip the fibres from the outer curve with a vegetable peeler and drop each piece into the bowl at once. Discard any rib that is hollow, brown or spongy. Three pounds of cardoon shrinks to roughly two pounds once trimmed, so buy a little extra. Rinse the pieces once more under cold water to wash away any soil trapped between the ridges.
Boil until tender
Bring the 4 quarts (4 L) of water to a simmer in a large stockpot. Whisk the flour with a ladle of cold water until smooth, stir it in with the salt and the juice of the second lemon, then add the drained ribs. Simmer gently, partly covered, for 50 to 60 minutes, until a knife tip slides in without resistance. Skim off any foam that rises, and keep the ribs submerged with a small plate if they float. Do not let the pot boil hard.
Dry and sauté
Lift the ribs out with a spider and spread them in one layer on clean towels. Let them steam dry for 15 minutes, then blot the tops. Melt the 2 tbsp (28 g) of butter in a wide pan with the garlic, add the ribs and sauté over medium heat for 3 to 4 minutes, turning once, until the surface looks matte and lightly buttered. Season with salt and remove the garlic. If you are using the anchovy, melt it into the butter first and let it dissolve before the cardoons go in. Set the pan aside off the heat.
Make the fonduta
Melt the 3 tbsp (42 g) of butter in a heavy saucepan, stir in the flour and cook for 2 minutes without letting it colour. Warm the milk and cream together in a second pan, then whisk them into the roux a little at a time until smooth. Simmer for 6 to 8 minutes, stirring, until the sauce coats a spoon. Take the pan off the heat, add the Castelmagno in three handfuls and stir until smooth. Season with nutmeg, white pepper and a little salt. The fonduta should be thick enough to pour slowly. If it seems tight, thin it with a splash of warm milk.
Assemble the gratin
Heat the oven to 375°F (190°C). Rub a 2 quart (2 L) baking dish with the cut garlic, then butter it well. Arrange the cardoons in it in two even layers, pour the fonduta over them, and tap the dish lightly so the sauce runs between the ribs. Bake for 20 minutes, until the edges begin to bubble and the sauce has settled around the ribs. The gratin will look pale at this point, which is what you want before the crust goes on.
Crust and colour
While it bakes, break the grissini into small pieces by hand, then pulse them once or twice in a processor until coarse. Toss them with the melted butter, the Parmigiano and the thyme. Scatter the mixture over the hot gratin from a height, raise the oven to 450°F (230°C) and bake 8 to 10 minutes, until the crust is deep gold. Rest for 8 minutes before serving. Sprinkle the hazelnuts and parsley over the top at the very end.
Plating
Serve the gratin in its own dish at the table, set on a wooden board, with a wide spoon that lifts through the crust to the ribs beneath. Warm the bowls to about 140°F (60°C) so the fonduta does not stiffen on contact with cold china.
For individual plates, spoon out two or three ribs with plenty of sauce and a generous piece of crust, keeping the crust on top so it stays crisp. Finish with a pinch of chopped hazelnuts, a scatter of parsley and, if you like, a few drops of olive oil. Serve at once. A slice of roast veal, a bowl of soup or a simple green salad turns it into a full winter meal. Put a small bowl of extra crushed grissini on the table for anyone who wants more crunch.
Professional Technique
The whole dish depends on how the cardoon is cleaned and cooked, because this vegetable fights back. Once cut, it darkens within minutes as its oxidative enzymes react with air, turning the flesh grey and then black. Nothing stays on the board. Work beside a large bowl of cold water and lemon juice, and drop each rib in the moment it is cut. The acid slows the enzymes and keeps the flesh ivory.
The ribs also carry woody filaments along the outer curve, and no amount of cooking will soften them. Trim the tops and bases, then peel the strings away with a vegetable peeler, working from base to tip, until the surface looks smooth and pale. A single missed string chews like thread in the finished gratin, and a guest will find it.
The cooking bath is a bianco: plenty of water, salt, lemon and a little flour whisked in smoothly so no lumps form. The flour keeps the cardoon light in colour and its starch softens the fibre. Simmer gently for 50 to 60 minutes, longer for thick, mature ribs. Test with the point of a knife: it should enter the thickest rib with no resistance, and the rib should bend without snapping. Taste one piece to confirm.
Dry the ribs before they go under the sauce. Cooked cardoon holds a great deal of water, and that water would leak out in the oven and thin the fonduta. Steam drying on towels for 15 minutes, followed by a short sauté, drives off the surface moisture and leaves the ribs ready to take up sauce.
Texture and Moisture Control
Three textures share one oven and want opposite conditions. The cardoon should be tender but still hold its shape, the fonduta velvety, and the crust brittle. The sauté in butter matters here, because a matte, dry rib absorbs a little fonduta instead of diluting it. The flour in the roux gives the sauce enough body to stay put rather than pool at the bottom of the dish.
The crust protects itself by size. Coarse grissini fragments have little surface area and stay crisp under steam, while fine crumbs turn to paste. Tossing them in melted butter and Parmigiano seals the pieces, so sauce bubbling up from below cannot soften them. Keep the crust off until the sauce is already hot, so it only has to colour, not cook.
Rest the gratin for 8 minutes before serving. Straight from the oven the sauce is too loose, and a short rest lets it thicken to a spoonable cream while the crust stays crisp. A cardoon that was cooked to the right tenderness will hold its shape through both the bake and the rest. Overcooked ribs collapse into the sauce and turn stringy and pale, which is why the knife test matters more than the clock.
Professional Mise en Place
This gratin has a long, patient first half and a quick, hot finish, so prepare in stages and keep the last minutes free for the crust.
Equipment and tools
Large bowl for lemon water, vegetable peeler, 8 quart (8 L) stockpot
Spider skimmer and clean kitchen towels for drying
2 quart (2 L) gratin dish and a heavy saucepan for the fonduta
Small food processor or a rolling pin for the grissini
Prepared ahead
Clean, boil, dry and sauté the cardoons up to 1 day ahead, refrigerated
Make the fonduta up to 1 day ahead, with a sheet of parchment pressed on the surface
Toast and chop the hazelnuts up to 2 days ahead
Grate the Parmigiano and crumble the Castelmagno the day before, covered
Service setup
Assemble the gratin up to 2 hours ahead, leaving the crust off
Mix the crust just before it goes on, keeping it dry until then
Warm the bowls and heat the oven before the crust goes on
Chop the parsley at the last moment
Set a rack in the upper third of the oven for the final colour
Chef Tips
Buy cardoons with tight, pale, heavy ribs and freshly cut ends. Brown or slack stalks are older and stringier, and no cooking rescues them. If you can only find large, mature cardoons, add 10 minutes to the simmer.
Taste the Castelmagno before you use it. Choose a wedge that is crumbly and mildly tangy, not bitter or ammoniated, because melting exaggerates whatever the cheese already has. Remove the rind, which does not melt. If the wedge is dry and hard, grate it rather than crumbling it.
Break the grissini by hand, then pulse only once or twice. You want irregular fragments the size of small peas, not flour, so a rolling pin over a folded towel works too.
A mashed anchovy fillet melted into the sautéing butter turns the gratin toward bagna cauda, the classic Piedmontese partner of the cardoon. It adds depth without tasting of fish. Use only one fillet, or it will take over.
Common Mistakes
Leaving the strings on. The fibres never soften and ruin every bite. Peel each rib thoroughly, from the base toward the tip, and check the cut ends.
Cleaning without acid. Left in plain water or in the air, the cut ribs turn grey and then brown. Keep the lemon water beside the board and work quickly.
Boiling too hard. A rolling boil batters the ribs and breaks them apart before the core is soft. Keep the bath at a gentle simmer.
Skipping the drying. Wet cardoons dilute the fonduta into a thin, watery pool at the bottom of the dish. Steam them on towels, then sauté.
Grinding the grissini to powder. Fine crumbs turn gluey under the steam and never crisp. Keep the pieces coarse and coat them in butter.
Cutting the rest short. A gratin served straight from the oven runs across the plate. Give it 8 minutes and it will hold its shape on the spoon.
Using a wet, sticky cheese. A very young, watery Castelmagno makes a loose sauce that never thickens. Choose one that crumbles.
Wine Pairing
Choose dry, lively Piedmontese wines: enough acidity for the cream and cheese, and nothing heavy enough to bury the delicate cardoon.
Erbaluce di Caluso DOCG: The sharpest white in Piedmont, with high acidity and a mineral, citrus edge. It cuts through the butter and cheese of the fonduta and refreshes the palate between spoonfuls, while its light bitterness echoes the vegetable. A natural first choice, and the one most Turin restaurants would pour. Serve it well chilled, at about 46°F (8°C).
Roero Arneis DOCG: A dry white with pear, almond and a soft, round body. Its gentle acidity leaves the delicate artichoke flavour of the cardoon intact, and its almond note meets the toasted crust and the hazelnuts on top. Serve it lightly chilled, around 48°F (9°C).
Alta Langa DOCG: A metodo classico sparkling wine from the Langhe hills. Fine bubbles and brisk acidity lift the cream, and its bread crust and toasted notes echo the grissini. It also suits a table where the gratin is served as an antipasto. Pour it at about 44°F (7°C) in tall flutes.
Gavi DOCG: Dry, lean and mineral, made from Cortese in the southeast of Piedmont. Its clean, citrus driven acidity slices through the milk fat, and its neutral fruit keeps the sweet, earthy cardoon in the foreground. It is the most neutral of the whites here, which suits a plate this delicate.
Barbera d'Asti DOCG: A red for those who want one, grown in the same hills as the cardoon fields. Bright acidity and soft tannin trim the fat of the cheese without overpowering the vegetable, provided it is young and unoaked. Serve it slightly cool, around 60°F (16°C).
Storage & Reheating
Refrigerate leftover gratin in an airtight container for up to 3 days. Reheat it uncovered at 375°F (190°C) for 15 to 20 minutes, until hot at the centre, so the crust crisps again. Avoid the microwave, which softens the crust and makes the sauce grainy. Cover the dish loosely with foil if the top browns too fast, then remove it for the last 5 minutes.
For make ahead, keep the cooked cardoons and the fonduta in separate containers for 1 day. Warm the fonduta gently, stirring, before assembling, and loosen it with a spoonful of milk if it has set. Bring the cardoons to room temperature for 20 minutes before they go into the dish, so they heat evenly. Do not freeze the finished gratin: the sauce separates and the ribs turn watery when thawed. The plain cooked cardoons, drained well, freeze for up to 2 months in a sealed bag.
Nutrition
Per serving, based on 6 servings:
Calories: 445 kcal
Total Fat: 27 g
Saturated Fat: 15 g
Trans Fat: 0.7 g
Unsaturated Fat: 11 g
Cholesterol: 75 mg
Sodium: 780 mg
Total Carbohydrates: 33 g
Fiber: 5 g
Total Sugars: 7 g
Added Sugars: 0 g
Protein: 17 g
Lactose: 5 g
Micronutrients: calcium, phosphorus, vitamin A, potassium, magnesium, vitamin B12
These figures are estimates. Contains milk, wheat and tree nuts.
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