Italian Sardinian Lemon and Almond Meringues | Bianchittus Sardi al Limone e Mandorle
Updated: Sep 14
Bianchittus take their name from the Sardinian word for white, and the whole ambition of the sweet is to stay that way. Egg whites and sugar are whipped to a firm gloss, chopped almonds and lemon zest are folded through, and the mounds go into an oven so cool that nothing browns. What comes out hours later is pale, weightless and faintly crackled, with the almond visible just under the surface.
There are five ingredients and no equipment beyond a bowl and a whisk, yet almost everything that can go wrong in a kitchen goes wrong here: a trace of fat, a grain of undissolved sugar, five degrees too much heat, a humid afternoon. The recipe is short and the discipline is long.
Yield: about 36 meringues, 6 servings. Prep: 25 minutes. Dry in the oven: 2 hours. Cool in the oven: 1 hour. Total: about 3 hours 30 minutes. Difficulty: intermediate. Course: dessert and pastry. Region: Sardinia, Campidano and the almond country of the Marmilla.
The Story
Bianchittus exist because of two surpluses. The first is egg whites. Sardinian festive baking runs on yolks: pardulas, papassinas, the rich short pastries of Easter and All Saints all take yolk after yolk, and a household that spent a morning making them was left with a bowl of whites that would not keep. The second is almonds. The Campidano and the Marmilla, the low hills inland from Oristano and around Ales and Baressa, have carried almond groves for centuries, and almond is to Sardinian pastry what hazelnut is to Piedmont. Put the surplus whites together with the almonds on the shelf and you have bianchittus, which is why they are found in the same villages and often on the same tray as amarettus, gueffus and sospiris.
The method came from the equipment. Before domestic ovens, village baking happened in the wood fired forno, and the day it was lit the bread went in first at full heat. What followed, as the oven gave up its warmth, was a descending scale of temperatures that suited one thing after another, and at the very end, when the chamber was barely warm to the hand, the meringues went in and stayed overnight. That slow declining heat is what a meringue wants, and it is why bianchittus are dried rather than baked. A modern oven held at 195°F (90°C) imitates the last hours of a Sardinian bread oven, nothing more.
Ingredients
For the meringue
Egg whites, from large eggs, at room temperature, 4, about 4 1/2 oz (135 g)
Granulated sugar, 1 1/4 cups (250 g)
Fresh lemon juice, 1/2 tsp (2.5 ml)
Fine sea salt, 1 small pinch
For the almonds and flavouring
Blanched almonds, 1 cup (140 g)
Finely grated lemon zest, untreated lemons, from 2
For finishing
Blanched almond halves, 36, one per meringue, optional
Neutral oil, a few drops, to wipe the bowl clean before whipping
Preparation
Step 1: Degrease the bowl and separate cleanly
Wipe the mixing bowl and whisk with a little lemon juice on paper, then dry them. Use metal or glass, never plastic, which holds a film of fat in its scratches that no washing removes. Separate the eggs one at a time into a small cup and tip each white into the main bowl only once you can see it is clean. A single speck of yolk in the fourth egg will cost you the whole batch, and yolk is 30 percent fat.
Step 2: Chop the almonds by hand
Set aside the 36 halves for the tops if you are using them, then chop the rest with a knife to the size of coarse grains of rice. Do not use a food processor: it crushes as much as it cuts, and the oil it releases is the one thing a meringue cannot absorb. Chopped almonds should look dry and angular on the board, not glossy. Leave them uncovered while you whip so any surface warmth disperses.
Step 3: Whip the whites to a soft foam
Start the whites with the salt and the lemon juice at medium speed and keep them there for 3 to 4 minutes. Slow whipping builds small, tight, stable bubbles; high speed builds large ones that look impressive and collapse in the oven. Stop when the foam holds a soft peak that folds over on itself, which is the moment the protein network is open enough to take sugar without being torn.
Step 4: Add the sugar in a slow rain
With the whisk running at medium, add the sugar a tablespoon at a time, waiting a few seconds between additions. All 1 1/4 cups (250 g) should take about 5 minutes to go in. Sugar added faster weighs the foam down before it can dissolve and the meringue weeps syrup in the oven. When it is all in, raise the speed for 2 minutes until the meringue is dense, glossy and holds a peak with only a slight bend at the tip.
Step 5: Test the sugar between your fingers
Rub a small amount of meringue between thumb and forefinger. It should feel completely smooth. If you can feel grains, whip for another minute and test again. Undissolved sugar is what makes a meringue bead with golden droplets during drying, and once the tray is in the oven there is no correction for it. This 10 second check is the single most useful habit in meringue work.
Step 6: Fold in the almonds and zest
Heat the oven to 195°F (90°C) and line two trays with parchment. Scatter the chopped almonds and the lemon zest over the surface of the meringue and fold with a large spatula, cutting down through the middle and turning the bowl a quarter turn each time. Eight or ten strokes is enough. Fold until they are evenly distributed and not one stroke further, because the almonds are deflating the foam with every turn.
Step 7: Shape the mounds
Spoon the mixture into irregular mounds about 1 1/2 inches (4 cm) across, or pipe them with a plain tip if you want them uniform, spacing them 1 inch (2.5 cm) apart. They barely spread. Press one almond half into the top of each if you are using them. Work quickly, because a meringue standing in the bowl begins to loosen and weep within 20 minutes of the last fold.
Step 8: Dry, then cool in the oven
Dry them for 2 hours at 195°F (90°C), with the oven door held very slightly ajar by the handle of a wooden spoon so the water they give off can escape. They are ready when they lift cleanly off the parchment and the base feels dry and firm. Then switch the oven off and leave them inside with the door closed for 1 hour. A meringue pulled straight into a cool kitchen contracts too fast and cracks across the top.
Plating
On a Sardinian table bianchittus are served in a shallow bowl or on a flat plate lined with paper, heaped rather than arranged, usually with coffee or a small glass of sweet wine at the end of a long meal. Their irregularity is the point: hand spooned mounds catch the light differently and the chopped almond breaking the surface reads as a texture, which a smooth piped dome does not.
If you are plating them as a restaurant dessert, use three per person on a plate with no sauce on it. A pool of cream or curd underneath will soften the base within two minutes and there is no recovering it. If you want a cream component, serve it in a separate small vessel beside the meringues and let the guest decide. A few strips of lemon zest and nothing else is the better answer, and it is the traditional one.
Professional Technique
The interesting technical problem here is that this recipe asks a fat intolerant foam to carry a nut that is half fat by weight. Egg white foam is a network of unfolded proteins holding air, and free lipid disrupts that network by competing for the air and water interface: the bubbles coalesce and the foam slumps. Almonds are roughly 50 percent oil. The recipe works only because that oil stays locked inside intact cell walls, which is why the almonds are chopped with a knife rather than ground, why they are never toasted first for this preparation, and why they go in at the very end. The moment you crush them fine or warm them, oil is released onto the surface of the pieces and the foam starts to pay for it.
The second technique is the distinction between drying and baking. A meringue held at 195°F (90°C) never reaches a temperature at which sugar caramelises or proteins brown, so the oven does one job only: removing water. The bubble walls, protein and syrup, lose moisture until the sugar concentration rises past the point where it sets glassy at room temperature. That is why the door stays ajar, since a sealed oven saturates with the water the meringues give off and drying stops. It is also why colour is a failure signal rather than doneness: a beige bianchittu has been too hot, and the name of the sweet is no longer accurate.
Texture and Moisture Control
Judge texture only when the meringues are completely cold. Warm meringue is always slightly pliable and tells you nothing, and cooks who test hot routinely dry the batch twice as long as it needs. Cold, a correct bianchittu is light in the hand, shatters under a fingertip and shows a dry, closed, chalk white interior with the almond pieces suspended in it. If the centre is tacky or the base sticks to the parchment, return the tray to a 195°F (90°C) oven for 20 minutes at a time and cool again before the next judgement.
After that, everything is about keeping water out. Dried meringue is powerfully hygroscopic and draws moisture from the air until it softens, so the batch moves from the cooling oven into an airtight tin with as little time on the bench as possible. Never refrigerate them: a domestic refrigerator is a humid box and meringue turns leathery in one overnight. If the kitchen is very humid, delay the whole project rather than fight it, because the foam itself takes up water while you whip.
Professional Mise en Place
Everything in this recipe is prepared before the whisk starts, because once the whites are whipped the meringue has perhaps 20 minutes of good life. The oven should already be at temperature and the trays already lined.
Equipment and tools
Metal or glass mixing bowl and whisk, degreased with lemon juice
Stand mixer or hand mixer with speed control, plus a large flexible spatula
Two sheet trays with parchment, and a wooden spoon to hold the oven door ajar
Chef knife and board for chopping the almonds by hand
Oven thermometer, since most domestic dials are inaccurate at low settings
Prepared ahead
Whites separated the day before and refrigerated, then brought to room temperature
Almonds chopped and the 36 halves for the tops set aside separately
Lemons zested, zest kept covered so it does not dry out
Sugar weighed into a jug for pouring with one hand
Oven preheated to 195°F (90°C) and checked with a thermometer
Service setup
Airtight tins lined with parchment, open and ready beside the cooling oven
Nothing damp on the bench: no wet cloth, no steaming pot, no open sink
Cream or accompaniments held cold and served separately, never underneath
Meringues moved from oven to tin in one pass once completely cold
A spare lined tray in case a batch needs a second short drying
Chef Tips
Use whites that are a few days old. Whites lose a little water and some viscosity as they age, and thinner whites whip faster and to a greater volume. Separate them the day before, keep them covered in the refrigerator, and take them out an hour before you whip so they reach room temperature, which matters more than freshness.
Trust a thermometer rather than the oven dial. At the low end most domestic ovens are out by 20 or 30 degrees, and 195°F (90°C) on a dial that actually delivers 250°F (120°C) is the difference between a white meringue and a beige one. An oven thermometer costs very little and it is the only way to know what you are working with.
Weigh the whites rather than counting eggs. Large eggs vary by a surprising margin and this ratio is roughly two parts sugar to one part white by weight. Four whites should give about 4 1/2 oz (135 g); if yours give 5 oz, add another 3 tbsp (38 g) of sugar. Guessing here shows up as a meringue that weeps or one that will not crisp.
Save the yolks the same day. Four yolks are exactly what a small batch of pardulas or a lemon cream needs, and the rhythm of Sardinian baking runs both ways. Yolks keep 2 days refrigerated under a film of water, poured off before use.
Common Mistakes
Whipping in a plastic bowl. Plastic retains a microscopic film of fat in its surface scratches, and fat prevents egg white proteins from forming a stable foam. The whites will look like they are whipping and then refuse to hold a peak. Use metal or glass, wiped with lemon juice.
Grinding the almonds instead of chopping them. A processor crushes the cells and releases oil, and that free oil collapses the foam as you fold. Chop by hand to the size of coarse rice grains and the oil stays where it belongs, inside the nut.
Adding all the sugar at once. Dumped in, sugar deflates the foam before it can dissolve, and undissolved sugar draws water out during drying and beads on the surface as golden syrup. Add it a tablespoon at a time over about 5 minutes.
Drying with the oven door shut. The chamber saturates with the water coming out of the meringues and drying effectively stops, leaving tacky centres after hours in the oven. Hold the door slightly open with the handle of a wooden spoon.
Setting the oven too high to save time. Above about 225°F (110°C) the surface sets before the centre has dried, the trapped steam cracks the shell and the sugar begins to colour. There is no fast version of this sweet.
Storing them before they are cold and dry. Warmth trapped in a tin condenses and softens the shells overnight. Cool them fully in the switched off oven, test one, and only then pack them airtight between sheets of parchment.
Wine Pairing
Girò di Cagliari DOC: A sweet red from the Cagliari plain and the most Sardinian answer to an almond sweet. Its dried cherry and raisin fruit meets the toasted almond character directly, and the warmth of the alcohol carries a dessert that is otherwise all sugar and air. Serve it lightly chilled in a small glass so the sweetness does not thicken.
Alghero DOC: From the Catalan corner of northwest Sardinia, and worth seeking out in the passito and late harvest bottlings rather than the dry whites. Those versions bring candied citrus and dried apricot that pick up the lemon zest, with enough acidity to keep the palate moving between one meringue and the next.
Recioto di Soave DOCG: Made from dried Garganega, and one of the few Italian sweet whites whose own flavour is almond. It meets the nut in the meringue on its own terms rather than contrasting with it, while its marzipan and acacia honey notes and its bright acidity stop the pairing becoming cloying.
Vin Santo del Chianti Classico DOC: The mainland classic for almond biscuits, and it works here for the same reason. Long oxidative ageing in small barrels gives walnut, dried fig and orange peel, and the finish is drier than the nose suggests, which suits a sweet whose sugar is already high.
Storage & Reheating
Cooled bianchittus keep up to 3 weeks in an airtight tin at cool room temperature, layered between parchment and no more than three deep, since a tall stack cracks the ones at the bottom. A metal tin with a tight lid beats a plastic box, which breathes slightly. Do not refrigerate them and do not leave them on a plate for more than an hour in a humid kitchen.
They do not freeze usefully. Freezing itself is harmless but the condensation that forms as they thaw dissolves the surface and leaves them sticky. If a batch has gone soft in storage, it can be rescued once: spread the meringues on a lined tray and return them to a 195°F (90°C) oven for 25 to 30 minutes with the door ajar, then cool them completely in the switched off oven exactly as you did the first time and pack them the moment they are cold. There is no reheating stage otherwise, since bianchittus are eaten at room temperature.
Nutrition
Per serving, based on 6 servings of about 6 meringues each:
Calories: 315 kcal
Total Fat: 12 g
Saturated Fat: 1 g
Trans Fat: 0 g
Unsaturated Fat: 10.5 g
Cholesterol: 0 mg
Sodium: 55 mg
Total Carbohydrates: 47 g
Fiber: 2.5 g
Total Sugars: 43 g
Added Sugars: 42 g
Protein: 7 g
Lactose: 0 g
Principal micronutrients: vitamin E, magnesium, manganese, riboflavin, copper, potassium
These figures are estimates and the sweet is naturally free of dairy and cholesterol, since it contains no yolk, butter or cream. Almond size and how generously the mounds are spooned are the main variables between batches.
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