Italian Saffron Open Raviolo with Sheep Ricotta, Burnt Onion and Lemon | Raviolo Aperto allo Zafferano con Ricotta di Pecora, Cipolla Bruciata e Limone
An open raviolo has given up on being sealed. Two thin sheets of pasta are cooked separately and laid over a filling at the last second, so nothing is trapped and nothing is boiled twice. Here the sheets carry saffron from the Navelli plateau in Abruzzo, the filling is sheep ricotta sharpened with lemon, and the element holding the plate together is an onion burnt black on a dry pan.
Burning an onion sounds like a mistake and is not. A halved onion left cut side down on hot metal goes past golden into genuine carbon, and it gains a bitterness with a smoky backbone, which is exactly what soft sheep ricotta lacks. The black outer layers are dried and ground to a powder, the sweet inner layers simmered into a broth, and the two reach the plate as different readings of the same vegetable.
The saffron sits between them, in the dough where it meets egg yolk and turns a deeper orange than water alone gives, and again in a butter emulsion poured at the table. Lemon zest keeps the whole thing from being heavy. Nothing is complicated, but everything must be timed, since an open raviolo cools faster than any closed pasta.
Yield: 4 servings. Prep: 1 hour 15 minutes. Cook: 1 hour. Rest: 1 hour. Total: about 3 hours. Difficulty: advanced. Course: primo piatto. Region: Abruzzo, Navelli and the province of L'Aquila.
The Story
Navelli is a village of fewer than five hundred residents on a high limestone plateau southeast of L'Aquila, sitting at around 2,300 feet (700 m) between the Gran Sasso and the Maiella. The plateau is the bed of a drained prehistoric lake, which is why the soil is deep, calcareous and unusually well drained, and why saffron grown there concentrates more crocin than almost any other crop in Europe. The local tradition demands that the corms be lifted and replanted every single year, work no other saffron region considers worth doing.
The spice arrived through the Church. A Dominican friar of the Santucci family, attached to the Inquisition tribunal in Spain, is credited with bringing corms home to Abruzzo in the fourteenth century. Within a hundred years L'Aquila was rich on it. Merchants from Milan, Venice, Marseille and Nuremberg bought the entire crop forward, and the city minted coins on the proceeds. The saffron that coloured the first risotti of Lombardy almost certainly came off this plateau, not from any Milanese field.
What survives is tiny. The DOP consortium, recognised in 2005 as Zafferano dell'Aquila, covers a handful of hectares farmed by a few dozen growers, and the whole annual output would fit in the boot of a car. The drying is the signature: stigmas are toasted over embers of almond or oak wood rather than in a dehydrator, which drives off moisture fast and leaves a faint smoked, honeyed edge that Sardinian and Iranian saffron do not have. That edge is the reason this recipe puts saffron next to a burnt onion.
Ingredients
For the saffron pasta
Italian 00 flour, 1 1/2 cups (200 g)
Semola rimacinata di grano duro, 1/3 cup (50 g)
Egg yolks, 6
Whole egg, 1
Saffron stigmas from Navelli, 1/4 tsp (0.2 g)
Warm water at about 110°F (43°C), 1 tbsp (15 ml)
Fine sea salt, 1/2 tsp (3 g)
For the sheep ricotta filling
Sheep ricotta, well drained, 1 1/4 cups (300 g)
Pecorino Abruzzese, finely grated, 1/4 cup (25 g)
Egg yolk, 1
Finely grated lemon zest, from 1 lemon
Fine sea salt, 1/2 tsp (3 g)
Freshly grated nutmeg, 1 small pinch
Ground white pepper, to taste
For the burnt onion
Yellow onions, medium, 3, about 1 lb (450 g)
Water, 1 1/2 cups (360 ml)
Extra virgin olive oil, 1 tbsp (15 ml)
Fine sea salt, 1/2 tsp (3 g)
For the saffron butter
Unsalted butter, cold and cubed, 5 tbsp (70 g)
Light vegetable stock, 1/2 cup (120 ml)
Saffron stigmas, 1/4 tsp (0.2 g)
Lemon juice, 2 tsp (10 ml)
For cooking and finishing
Water, 4 qt (3.8 L)
Coarse sea salt, 1 1/2 tbsp (27 g)
Chives, finely sliced, 1 tbsp
Extra virgin olive oil, a few drops per plate
Preparation
Step 1
Bloom the saffron and mix the dough. Crush 1/4 teaspoon of Navelli stigmas into the tablespoon of warm water and leave it 20 minutes, until the liquid is dark amber. Mound the 00 flour and semola, add the yolks, whole egg, salt and saffron water, bring it together with a fork and work it by hand 10 minutes. It should feel firm and slightly tacky. Wrap it and rest it 1 hour at room temperature.
Step 2
Char the onions. Halve the onions through the root with the skins on. Set a dry cast iron pan over high heat and lay them cut side down without oil. Leave them 12 to 15 minutes until the cut faces are genuinely black, not brown. Lift them off, peel away and reserve the blackened outer layers, and keep the pale soft inner layers separate.
Step 3
Make the burnt onion broth. Put the pale inner layers in a saucepan with the water, olive oil and salt, bring to a bare simmer and cook 25 minutes. Strain through a fine mesh sieve, pressing gently, and reduce to about 1/2 cup (120 ml). It should taste sweet first and smoky second. Do not boil it hard, since the smoke turns acrid when concentrated too fast.
Step 4
Dry the burnt layers into a powder. Spread the reserved black layers on a tray and dry them in a 250°F (120°C) oven about 30 minutes, until they snap. Grind them in a spice mill and sieve the powder. This is a seasoning, not a sauce: a quarter teaspoon per plate is the point and half a teaspoon is a burnt tyre.
Step 5
Make the ricotta filling. Hang the sheep ricotta in a cloth 2 hours if it looks wet at all, then beat it smooth with the pecorino, egg yolk, lemon zest, salt, nutmeg and white pepper. Do not use a food processor, which shears the curd and makes the filling slack. Taste it cold and keep it slightly under salted, since the pecorino seasons it again.
Step 6
Roll and cut the sheets. Roll the rested dough through a pasta machine to the second thinnest setting, about 1/32 inch (0.8 mm), so the sheet is translucent but not fragile. Cut eight discs of 4 1/2 inches (11 cm), two per serving. Lay them on semola dusted parchment in a single layer under a damp cloth. They must not dry out or they curl in the water.
Step 7
Build the saffron butter. Crush the second 1/4 teaspoon of stigmas into the warm stock and infuse 15 minutes off the heat. Bring it to a bare simmer, then whisk in the cold butter one cube at a time, never letting it boil, until the sauce is pale gold and coats a spoon. Off the heat, whisk in the lemon juice and hold it warm.
Step 8
Cook the sheets and assemble. Bring the 4 quarts of water to a rolling boil, add the coarse salt and slide in the discs four at a time. They need 60 to 90 seconds only. Lift them onto a warm oiled tray with a slotted spatula. Lay one disc on each hot plate, pipe a quarter of the ricotta into the middle, drape the second disc over it and dress immediately.
Plating
Plates have to be genuinely hot, around 160°F (70°C), and the assembly has to happen on them. A single sheet of pasta loses its heat in under a minute, and an open raviolo built on a board and carried out arrives lukewarm with a skin on the filling.
Spoon 2 tablespoons of burnt onion broth onto the hot plate, then lay the bottom disc over it. Set the ricotta in a dome slightly off centre, leaving the edge of the pasta clear, and drape the second disc so it falls into folds rather than lying flat. Pour the saffron butter over so it runs into the folds and pools at the base.
Dust burnt onion powder through a small sieve, held to one side rather than over the whole surface, then add the chives and a few drops of olive oil. The plate reads pale gold with a dark smudge at one edge, and it goes to the table within twenty seconds of the butter being poured.
Professional Technique
The defining technique is deliberate pyrolysis of the onion, split into two products. Onion halves left on dry metal at high heat pass through caramelisation into carbonisation, and two things then exist at once: blackened outer layers that are genuinely bitter, and inner layers steamed inside their own skin and sweeter than any softened onion. Separating them lets the sweet half become a broth and the burnt half a dry seasoning, which is the only way to use burnt flavour without wrecking the dish.
The second is choosing an open raviolo over a sealed one for this filling. A closed raviolo boils its filling, and sheep ricotta beaten with egg yolk turns grainy and weeps when cooked through. Cooking the sheets naked for ninety seconds and folding them around a filling at room temperature means the ricotta is warmed only by contact, so it arrives soft and just set.
The third is where the saffron goes. Navelli stigmas are dried over wood embers and carry a faint smoked note, so the spice is a bridge to the burnt onion rather than a colour. Half of it is bloomed in water and worked into a yolk rich dough, where it is fixed by heat; the other half is bloomed in stock and mounted into butter off the boil, so the volatile aroma survives. A butter emulsion also carries saffron further than water does, because the aromatic compounds are fat soluble.
Texture and Moisture Control
Three moisture problems have to be solved before the plate is built. The ricotta is the first: sheep ricotta holds a lot of whey and a wet filling will slide out from between the sheets and thin the butter. Drain it in a cloth until it holds a shape on a spoon. The pasta is the second: rolled to 0.8 mm it cooks in ninety seconds, and any longer turns the yolk rich dough slippery and impossible to lift intact.
The butter emulsion is the third and the most fragile. Butter mounted into stock holds only while the mixture stays between about 130°F and 160°F (55°C and 70°C), and a single boil splits it into oil and milk solids. Add the cubes cold and one at a time, keep the pan moving, and if it does break, pull it off the heat and whisk in a tablespoon of cold stock to bring it back. Hold it in a warm bain marie, never over direct flame.
Professional Mise en Place
Everything except the pasta and the butter is done in advance. The last two minutes decide the plate.
Equipment and tools
Pasta machine, ring cutter of 4 1/2 inches (11 cm), bench scraper
Heavy cast iron pan kept dry for the onions, and a spice mill
Fine mesh sieve for the broth, and a small one for dusting the powder
Wide pan for the pasta, slotted fish spatula, small whisk for the butter
Prepared ahead
Burnt onion broth reduced and cooled, up to 2 days refrigerated
Burnt onion powder dried, ground and sieved, up to 2 weeks in an airtight jar
Ricotta filling beaten and chilled, up to 1 day, kept in a piping bag
Pasta discs cut and layered on semola dusted parchment under a damp cloth, same day
Service setup
Saffron infusing in stock 15 minutes before the butter is mounted
Plates in a low oven reaching about 160°F (70°C)
Pasta water at a rolling boil and salted, oiled tray beside it
Broth warm, filling at room temperature, powder and chives within reach
Chef Tips
Let the onions go further than feels reasonable. Cooks stop at deep brown because burnt smells like failure, but brown onion is simply sweet and adds nothing this dish does not already have. The cut face has to be black and slightly ashy before the powder has any character at all.
Take the ricotta filling out of the refrigerator twenty minutes before service. Cold ricotta between two sheets of pasta pulls the heat straight out of them, and the difference between a warm open raviolo and a tepid one is entirely down to the starting temperature of the middle.
Cut one extra disc per person. The sheets are thin and one will tear on the spatula sooner or later, and there is no way to patch an open raviolo once it is on the plate. Spare discs cook in the same water and cost nothing.
If you cannot get sheep ricotta, use cow ricotta and add an extra tablespoon of grated pecorino with a squeeze of lemon juice. It will not have the same sharpness on the finish, but it will hold its shape, which matters more. Do not use ricotta sold in a tub with stabilisers, which never firms up.
Common Mistakes
Oiling the pan before charring the onions. Oil smokes and burns long before the onion reaches carbon, and what you get is acrid fat rather than burnt vegetable. Use a dry cast iron pan and add the oil later, to the broth.
Using the black layers as a sauce. Burnt onion is a seasoning measured in quarter teaspoons. Simmered into liquid or spooned on generously it turns the whole plate ashy and bitter, and no amount of butter recovers it.
Boiling the saffron butter. The emulsion splits above about 160°F (70°C) and you are left with oily pools and grainy solids. Whisk in cold butter cube by cube over low heat and never let the pan simmer.
Rolling the pasta too thick. At 1/16 inch (1.6 mm) the sheets need three minutes, dominate the filling and eat like a lasagna. The second thinnest setting on the machine is the target, and translucency is the test.
Assembling away from the plate. An open raviolo built on a board and transferred arrives cold with a skinned filling. Lay the first disc directly onto the hot plate and work there.
Wine Pairing
Cerasuolo d'Abruzzo DOC: The wine of the same province as the saffron, a dry rosato with real weight rather than a pale aperitif. Its sour cherry fruit and light tannic grip stand up to the char, while the acidity cuts the sheep ricotta cleanly. Serve it at about 54°F (12°C), warmer than you would pour a pale pink wine, so the fruit is not shut down.
Verdicchio di Matelica DOC: Grown in the only Marche valley that runs inland rather than to the sea, which gives it more acidity and less breadth than its coastal cousin. That sharpness meets the lemon zest directly, and the bitter almond finish of Verdicchio lands beside the burnt onion instead of arguing with it. A bottle with two or three years on it has the texture the butter wants.
Erbaluce di Caluso DOCG: A Piedmontese white with piercing acidity and almost no aromatic noise, which is precisely its value on a plate carrying saffron, smoke and lemon at once. It adds no fourth flavour and simply resets the palate between mouthfuls. The faint chalky bite on its finish echoes the mineral edge that high plateau saffron leaves at the back of the throat.
Ribolla Gialla Collio DOC: From the marl and sandstone hills on the Slovenian border, and the textural choice here. Ribolla has a waxy, faintly tannic mid palate with enough grip to sit under a mounted butter sauce, and its green apple and white flower aromatics stay far enough back to let the saffron speak first.
Bianco di Custoza DOC: A blend from the moraine hills south of Lake Garda, soft, dry and built around white peach and almond. It is the gentlest option on the list and the right one if the burnt onion has been used with a heavy hand, because its roundness softens the ash rather than sharpening it. Serve it at about 48°F (9°C).
Storage & Reheating
The assembled dish does not keep and must be eaten within a minute of plating, but every component stores well. The burnt onion broth keeps 2 days refrigerated in a sealed jar and freezes for 2 months. The powder keeps 2 weeks in an airtight jar away from light and loses its smoke once moisture reaches it, so add a few grains of rice.
The ricotta filling keeps 1 day refrigerated in a piping bag and should not be frozen, since sheep ricotta separates on thawing and cannot be beaten smooth again. Uncooked pasta discs keep 1 day in the refrigerator between sheets of semola dusted parchment, or 1 month frozen flat on a tray and then stacked with parchment between them. Cook them from frozen, adding 30 seconds.
Do not reheat cooked sheets as they are. Cut them into wide ribbons, refrigerate up to 1 day, and bring them back in a pan with a spoonful of burnt onion broth and a knob of butter over medium heat for a minute. The saffron butter cannot be stored and must be mounted fresh.
Nutrition
Per serving, based on 4 servings:
Calories: 640 kcal
Total Fat: 36 g
Saturated Fat: 19 g
Trans Fat: 0.6 g
Unsaturated Fat: 14 g
Cholesterol: 390 mg
Sodium: 620 mg
Total Carbohydrates: 52 g
Fiber: 3 g
Total Sugars: 6 g
Added Sugars: 0 g
Protein: 26 g
Lactose: 4 g
Principal micronutrients: calcium, phosphorus, vitamin A, vitamin B12, riboflavin, selenium, choline
These figures are estimates. Cholesterol is high because the dough is built on egg yolks, and most of the salt in the pasta water is discarded rather than eaten.
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