Italian Piedmont Hazelnut Meringues | Meringhe alle Nocciole del Piemonte

Sep 29

11 min read

Meringhe alle Nocciole del Piemonte (Italian Piedmont Hazelnut Meringues)

A meringue is two ingredients and a great deal of discipline: egg white and sugar, whipped, piped and dried until every trace of water has gone. These carry a third element, a fine powder of toasted Piedmont hazelnuts folded in at the last moment. The nut perfumes the shell without weighing it down, and the result is ivory, brittle, hollow sounding and almost weightless.

Yield: about 24 meringues, 12 servings of 2. Prep: 35 minutes. Drying: 2 hours 15 minutes to 2 hours 45 minutes. Cooling: 1 hour. Difficulty: intermediate. Course: dessert or petit four. Region: Piedmont, the Langhe.

The Story

It is worth being straightforward about what this recipe is. There is no medieval Piedmontese meringue to reconstruct. The meringue as we know it is a French and central European codification: Francois Massialot printed a recognisable method in 1692, and the name is traced variously to the Swiss town of Meiringen and to a pastry cook called Gasparini, though neither attribution has ever been proved. What Piedmont contributed was not the technique but the ingredient, and the pairing is a pastry decision rather than a piece of peasant tradition.

The connection is still less arbitrary than it looks. Piedmont was the seat of the House of Savoy, and the Savoy court kitchens were French speaking, French staffed and French trained for centuries. Turin absorbed the French repertoire of sugar work earlier and more thoroughly than anywhere else in Italy, which is why the city has the oldest confectionery culture in the country and why its historic cafes are full of things that look Parisian and taste Piedmontese. A meringue perfumed with the local nut is exactly what that hybrid kitchen would produce.

The nut is the Tonda Gentile Trilobata, grown across the Langhe and the Alta Langa and protected as Nocciola Piemonte IGP. Pastry cooks prize it for a thin skin that lifts cleanly after roasting, low residual moisture and an aroma that peaks rather than flattens under heat. Cortemilia, in the Alta Langa, is the historic centre of the trade and still holds its hazelnut fair every August. The harvest in late August and September still sets the rhythm of the pastry calendar in the hills.

The nut earned that place through scarcity. In 1806, during the Napoleonic blockade, cocoa became scarce and expensive in Turin, and the chocolate makers stretched it with ground hazelnuts, which is the origin of gianduja. Hazelnuts were already a Langhe crop, planted on slopes too steep or too poor for vines, and the orchards spread through the twentieth century until pastry made with them became a local identity. The closest relatives of this meringue are the brutti ma buoni, claimed by Gavirate in Lombardy and by Borgomanero in Piedmont, where the nuts are cooked with the whites in a pan. Here the nut stays raw in the foam and the drying does the work.

Ingredients

For the meringue

Egg whites, room temperature, aged 1 to 2 days in the refrigerator, 5 1/4 oz (150 g), about 4 large
Superfine sugar, 10 1/2 oz (300 g)
Fine sea salt, 1 small pinch
Fresh lemon juice, strained, 1 tsp (5 ml)
Pure vanilla extract, 1 tsp (5 ml)

For the hazelnut flour

Blanched hazelnuts, Nocciola Piemonte IGP if available, 2 1/2 oz (70 g)
Confectioners sugar, 1 oz (30 g), to grind with the nuts

For finishing

Toasted hazelnuts, coarsely crushed, 2 tbsp (18 g)
Confectioners sugar, a very light dusting at the table, optional

For serving

Unsweetened cream, whipped to soft peaks, 1/2 cup (120 ml), or fresh robiola, 4 oz (115 g)
Redcurrants or raspberries, 1 cup (125 g)

Choose Piedmont hazelnuts if you can, since their thin skin and low moisture grind to a drier flour. Use superfine sugar, not standard granulated. The crystals must dissolve completely during whipping, and if superfine is unavailable, pulse granulated sugar in a dry blender for 20 seconds and let the dust settle before opening the jar. Do not substitute pasteurised carton whites, which whip poorly and leave a weak foam.

Preparation

Toast and cool the hazelnuts

Heat the oven to 300°F (150°C) and toast the blanched hazelnuts on a small tray for 10 to 12 minutes, until pale straw and sweet smelling. Dark nuts give a grey meringue and a bitter finish, and the nut only has to perfume, not dominate. Cool them completely, at least 25 minutes, because a warm nut releases oil at once and grinds to paste.

Grind and sift the flour

Pulse the cold nuts with the 1 oz (30 g) of confectioners sugar in a dry processor, two seconds at a time. The sugar absorbs the released oil and keeps the mixture powdery. Stop when the texture looks like coarse flour, even if a few larger fragments remain. Sift through a medium sieve, and keep whatever stays behind for the garnish instead of forcing it through, which only presses out oil. The flour should be dry and free running, and if it clumps when squeezed the nuts were still warm.

Degrease the bowl and whisk

Wipe a stainless steel or glass bowl and the whisk with a paper towel moistened with lemon juice, then dry them. Separate each white into a cup first, because a single speck of yolk costs a third of the volume. Plastic holds an invisible film of fat that no washing removes, and with a fat rich powder coming later you cannot afford that handicap.

Whip the foam and rain in the sugar

Whip the whites with the salt at medium speed until opaque, add the lemon juice and reach soft peak. Add the superfine sugar in a slow rain down the side of the bowl, taking three to four minutes. Then whip at high speed for 4 to 6 minutes until dense, glossy and stiff. Rub a little between finger and thumb: any grit is undissolved sugar. Add the vanilla for five seconds only. Rushing the sugar is the commonest fault in meringue making, because dumped in, it weighs the foam down before it dissolves and the volume never returns.

Fold in the hazelnut flour

Off the machine, sift a third of the flour over the foam and fold with a silicone spatula, cutting down the middle, along the base and up the side. Repeat twice. The whole fold takes under 30 seconds, about fifteen strokes. The mixture loses a little volume and gains a faint beige tone, both expected. Stop while a few pale streaks remain rather than folding until uniform.

Pipe the meringues

Line two flat trays with parchment. Fill a bag fitted with a 1/2 inch (12 mm) star nozzle and pipe rounds 1 1/2 inches (4 cm) across, 1 inch (2.5 cm) apart. Work within 15 minutes, since a nut loaded foam slackens in the bag. Finish each with a quick upward flick, scatter a pinch of crushed hazelnuts on top without pressing, and go straight to the oven.

Dry, weigh and cool

Weigh each tray with its parchment empty and write the figure down, then weigh it again loaded. Dry at 200°F (95°C), conventional, without opening the door for 90 minutes. The meringues must stay ivory, and any golden colour means the oven is too hot. After 2 hours weigh the trays quickly and return them for 20 minute blocks until two weighings agree. Then switch the oven off, wedge the door open and leave the trays inside for one hour.

Plating

Serve two per person on a small dry plate at room temperature, with the piped ridges facing the diner and nothing underneath. A meringue this light needs no sauce and gains nothing from cocoa. Add a veil of confectioners sugar through a fine sieve at the table only, since sugar on a damp plate turns to syrup within a minute.

Set something cold and unsweetened beside them: a quenelle of unsweetened whipped cream, or a spoonful of Piedmontese robiola. Sharp berries such as redcurrants and raspberries work, but never strawberries, which are too sweet and too wet and soften the shell where they touch it. For a dessert course, break two meringues into shards, layer them with cream and crushed hazelnuts in a shallow bowl, and serve within a minute, before the cream dissolves them.

Professional Technique

The reliable measure of dryness is weight, not appearance. A hazelnut meringue looks finished long before it is. The nut is oily and porous, it holds moisture inside its structure and gives it up slowly, so the shell turns pale, firm and dull while the core is still soft. Eye and tap cannot detect that gap. Pulled at that stage, it wrinkles and collapses as it cools.

So the tray is weighed. Record the empty tray with its parchment, then the loaded tray before it goes in. A batch this size starts at about 280 g of raw meringue per tray and loses roughly a fifth of it, some 55 to 60 g, as water leaves. Weigh after two hours, return the tray for 20 minutes, and weigh again. While the figure falls, water is still leaving. When two weighings match within 1 g, the meringue is dry to the centre.

Expect this to take longer than a plain white meringue of the same size, which usually finishes in about 90 minutes at this temperature. The hazelnut version needs a further 30 to 45 minutes, so the total lands between 2 hours 15 minutes and 2 hours 45 minutes, and a humid day pushes it toward the top.

The meringues then cool inside the switched off oven, door ajar, for a full hour. The shell is rigid while the core still holds heat and vapour. In cool air the shell contracts first and cracks, and vapour condenses against it. Inside the oven, core and shell cool together and the last vapour escapes through the open door.

Texture and Moisture Control

The target texture is uniform: dry, brittle and fine grained enough to dissolve rather than crumble. A chewy centre is a fault, not a variation. Sugar draws water from the air continuously, so on a humid afternoon the meringues are absorbing moisture from the room while the oven removes it. Humidity alone can add 30 minutes. Plan for the longer drying range and keep pots of boiling water and any running sink away from the oven.

Fat is the other variable. Hazelnut flour is about sixty percent fat, and fat is the enemy of whipped egg white because it displaces protein from the bubble walls. Three decisions contain it: a two to one sugar ratio, which thickens the liquid phase of the foam, grinding the nuts with confectioners sugar so the oil is already bound, and a fold limited to fifteen strokes. Every extra stroke exposes more bubble walls to fat, so the fold is a budget, not a style.

Once cold, a bare meringue goes from brittle to leathery in about two hours on a kitchen counter. Seal them at once. Sugar attracts water relentlessly, and a container that is not airtight is only a slower counter. If they do soften, 15 minutes at 200°F (95°C) and another slow cooling restores the crunch.

Professional Mise en Place

Everything involving the hazelnuts is finished before the mixer starts, because once the foam is whipped it has to be folded, piped and in the oven within about 15 minutes.

Equipment and tools

Stand mixer with stainless steel or glass bowl, never plastic
Dry food processor, medium sieve and fine sieve for dusting
Silicone spatula and a wooden spoon to wedge the oven door
Piping bag with a 1/2 inch (12 mm) star nozzle
Two flat heavy trays, parchment, and a digital scale accurate to 1 g
Oven thermometer, since domestic ovens rarely hold 200°F (95°C)

Prepared ahead

Whites separated, covered and aged 1 to 2 days, then brought to room temperature
Flour ground and sifted up to 1 day ahead, kept airtight
Sugar weighed into a jug with a pouring lip
Empty trays weighed and the figures written on the parchment corner
Oven thermometer placed inside and confirmed at 200°F (95°C)

Service setup

Meringues held airtight until plating
Plates dry and at room temperature
Cream or robiola cold, spooned at the last second
Berries washed, dried completely and kept apart
Cracked pieces kept for the layered bowl

Chef Tips

Age the whites. Whites left covered in the refrigerator for a day or two lose a little water and whip to a larger, steadier foam. Bring them to room temperature first, about an hour on the counter, because cold whites will not reach full volume.

Buy an oven thermometer. Household thermostats are wildly inaccurate at the bottom of the dial, and a setting of 200°F (95°C) that delivers 250°F (120°C) will colour and crack every tray.

Use the coarse fragments left in the sieve as the garnish. They are already toasted and carry a little confectioners sugar, which helps them stick to the piped surface.

Pipe one test meringue before committing both trays. If it holds a sharp ridge the fold was right. If it settles within seconds, pipe everything immediately and accept flatter meringues, because whipping cannot rescue a foam once the nut flour is in. Do it on a scrap of parchment while the bag is still filling.

Common Mistakes

Using chopped nuts. Pieces sink through the foam and leave an oily layer at the base. If the recipe says chopped, it is a different recipe. Grind them to a powder with confectioners sugar.

Pouring in the sugar. It weighs the foam down and leaves crystals that melt into amber syrup in the oven. Take three to four minutes, and rub a pinch of foam between your fingers to check.

Grinding warm nuts. They turn to paste within a few pulses, and paste cannot be folded into a meringue.

Folding until smooth. Every stroke past fifteen exposes more bubble walls to fat. A few streaks disappear while piping.

Judging dryness by eye. A pale, firm shell can hide a soft core, and the meringue wrinkles as it cools. Weigh the trays.

Opening the door early. Cool air in the first 90 minutes collapses the soft structure and the centres sink.

Sealing them warm. Trapped steam turns the whole batch leathery overnight. Wait for room temperature, then seal at once, since even faint warmth steams the container.

Wine Pairing

Alta Langa DOCG: The Piedmontese metodo classico, from Pinot Nero and Chardonnay grown in the hills where these hazelnuts come from. Its fine, persistent bead and firm acidity cut through pure sugar in a way no still wine manages, and long lees ageing leaves a bready, nutty note that meets the flour directly. Choose a brut, so a little residual sugar keeps it from tasting austere.

Moscato d'Asti DOCG: Lightly sparkling, low in alcohol and only gently sweet, with peach and sage aromas. It weighs no more than the meringue does, and its soft fizz lifts the sugar off the palate. Serve it well chilled at 43°F (6°C). The pairing is one of Piedmont's easiest and most natural, and it keeps a second and third meringue as interesting as the first.

Colli Orientali del Friuli Picolit DOCG: A rare and delicate sweet white. Its restrained sweetness, acacia honey and white peach sit beside something this light without flattening it. Pour a small measure at about 50°F (10°C), because a heavy dessert wine would obliterate the meringue. That is the point of the choice: a meringue weighs nothing, so its wine must weigh almost nothing too.

Recioto di Soave DOCG: Garganega dried through the winter, giving apricot, candied citrus peel and a pronounced bitter almond note on the finish. That almond note belongs to the same aromatic family as toasted hazelnut, and the acidity stops two sweet things from tiring the palate. It is also easier to find than Picolit and pours well in a small glass.

Storage & Reheating

Once completely cold, store them in an airtight metal tin or a glass jar with a gasket, in loose layers with parchment between, at cool dry room temperature. They stay crisp for 8 to 10 days, and the hazelnut aroma is clearest between the second and fifth day. Cardboard and paper are permeable to humidity and will not do.

Never refrigerate them: a refrigerator is a cold humid box and they turn leathery within hours. They freeze well in a rigid airtight container for 6 weeks, thawed sealed at room temperature for 2 hours so condensation forms on the container, not the meringues.

Softened meringues are almost always recoverable, and this can be repeated over the life of a batch. Spread them on a lined tray for 15 minutes at 200°F (95°C), then cool them in the switched off oven for 30 minutes.