Mont Blanc Pastry Recipe

Prepare the chestnuts

If using vacuum-packed or pre-cooked chestnuts, drain and pat dry. If using fresh chestnuts, score, roast or boil until tender, peel both outer shell and inner skin, and measure 400 g peeled chestnuts.

Cook and sweeten

Place the peeled chestnuts, granulated sugar (90 g), and 30 ml milk in a medium saucepan over low heat. Gently warm and stir for 6–8 minutes until sugar dissolves and chestnuts are tender and starting to break down. Do not boil vigorously; keep a gentle simmer.

Blend to purée

Transfer the warm chestnut mixture to a food processor or blender. Add vanilla and dark rum. Puree until very smooth, pausing to scrape down the sides. If the mixture is too thick or grainy, add an additional 1–2 tablespoons (15–30 ml) of milk or water and blend until silky.

Finish and cool

Taste and adjust sweetness with a little more sugar if needed. For a silkier texture, blend in 15 g unsalted butter until incorporated. Pass the purée through a fine-mesh sieve for ultimate smoothness (optional). Chill in the refrigerator until fully cool — at least 1 hour. Reserve 160 g for the chestnut whipped cream and the remainder for piping.

Preheat and prepare baking sheet

Preheat the oven to 120°C (250°F). Line a baking sheet with parchment paper. Draw six 6–7 cm circles on the backside of the parchment as guides (for individual Mont Blanc bases).

Whip the egg whites

In a clean, grease-free bowl, whisk the 3 egg whites with cream of tartar (or a few drops lemon juice) until soft peaks form. Gradually add the granulated sugar (150 g) in three additions while continuing to whisk to glossy, stiff peaks. Add vanilla extract near the end and, if using, sifted cornstarch and fold gently to combine.

Pipe or spoon the meringue

Spoon or pipe the meringue onto the parchment inside the drawn circles, creating slightly domed discs about 6–7 cm across. Smooth edges with a small spatula if needed.

Bake low and slow

Bake at 120°C (250°F) for 60–75 minutes until meringues are crisp and dry to the touch. Turn off the oven and leave meringues inside with the door ajar to cool gradually for another 30 minutes to prevent cracking. Remove and cool completely on a rack.

Chill equipment

Chill the mixing bowl and whisk/beaters in the refrigerator for 10–15 minutes beforehand so the cream whips better.

Whip the cream

Pour the cold heavy cream (300 ml) into the chilled bowl. Add powdered sugar and vanilla. Whip on medium-high speed until soft peaks begin to form.

Incorporate chestnut purée

Reserve 160 g of the prepared chestnut purée. Fold the chestnut purée into about one-third of the whipped cream to loosen it, then gently fold that mixture back into the remaining whipped cream until evenly colored and smooth. Chill briefly if needed to firm up (10–15 minutes).

Set meringue base

Place each cooled meringue disc on a serving plate. If desired, brush or sprinkle a little of the optional rum over the meringue (about 1–2 ml per disc).

Pipe chestnut whipped cream mound

Fit a pastry bag with a large round tip and fill with the chestnut whipped cream. Pipe a generous dome of chestnut whipped cream onto each meringue disc, leaving a slight peak at the top.

Pipe chestnut purée vermicelli

Transfer the remaining chestnut purée (the part not folded into cream) into a piping bag fitted with a thin spaghetti/vermicular tip (about 3–4 mm) or a multi-hole Mont Blanc nozzle. Starting at the base of the whipped cream dome, pipe continuous thin strands of chestnut purée over the dome to create the signature Mont Blanc 'noodle' look, covering evenly and leaving a small peak at the top.

Garnish

Top each Mont Blanc with a whole candied chestnut or roasted chestnut half. Dust lightly with unsweetened cocoa powder or a little powdered sugar just before serving.

Serve

Serve immediately or keep refrigerated for up to 12 hours. For best texture, allow chilled Mont Blancs to sit at room temperature 10–15 minutes before eating.