White Chocolate Pistachio Mousse

Name: White Chocolate Pistachio Mousse
Prep time: 20 min
Total time: 20 min
Yield: 6 servings
Cuisine: Middle Eastern
Ingredients: 5 oz (140 g) White chocolate, finely chopped, finely chopped; 1 tbsp (14 g) Unsalted butter; 3 count Pasteurized egg yolks, large, at room temperature; 3 tbsp (38 g) Granulated sugar; ¼ cup (65 g) Pistachio paste (unsweetened or lightly salted); 1¼ cups (300 ml) Heavy cream, cold, cold; ½ tsp (2½ ml) Vanilla extract; pinch Fine sea salt; ¼ cup (30 g) Shelled roasted pistachios (unsalted or lightly salted), roughly chopped or crushed (optional); Edible gold leaf (optional garnish) (optional)

From the MyKitchenBank Kitchen

A luxurious, silky mousse that balances the sweetness of white chocolate with the delicate nuttiness of pistachios. This no-bake dessert features whipped cream folded with a light, airy egg-based mousse, garnished with crushed pistachios for texture and visual appeal. Perfect for elegant dinner parties or a special treat.

Prep: 20 min
Cook: —
Wait: 3 hr
Total: 3 hr 20 min
Makes: 6 servings (about ¾ cup each)

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Steps

Before you start

Use pasteurized eggs or egg yolks to avoid food safety concerns with raw eggs; alternatively, use pasteurized egg whites from a carton.
Chill your mixing bowl and beaters for whipping cream for 15 minutes ahead of time.
Have all ingredients at room temperature except the cream (keep cold).

1
Melt white chocolate and butter
- Set up a double boiler: place a heatproof bowl over a pot of gently simmering water (the bowl should not touch the water).
- Add the chopped white chocolate and butter to the bowl, stirring occasionally with a rubber spatula until completely melted and smooth, about 3–4 minutes.
- Remove from heat and let cool slightly for 2 minutes.
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Ready when: Chocolate is smooth with no lumps, spatula glides through easily
Tip: Do not let water boil vigorously; gentle heat prevents chocolate from becoming grainy or seizing.
2
Whisk eggs and sugar
- In a medium chilled bowl, combine the room-temperature egg yolks and sugar.
- Using an electric mixer or whisk, beat for 2–3 minutes until the mixture is pale, thick, and ribbony (it should triple in volume).
- Scrape down the bowl halfway through.
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Ready when: Mixture is pale yellow, thick, and falls in ribbons from the whisk
Tip: Do not skip the beating step—this aeration is crucial for a light, airy mousse texture.
3
Fold in melted white chocolate
- Gently fold the cooled melted white chocolate into the egg-sugar mixture using a rubber spatula.
- Use a gentle figure-8 motion, turning the bowl as you fold, until no white streaks remain.
- Do not stir vigorously, as you want to preserve the airiness.
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Ready when: No white streaks visible; mixture is uniform pale cream color
Tip: Fold gently—aggressive stirring collapses air bubbles and results in a dense mousse.
4
Stir in pistachio paste and vanilla
- Add the pistachio paste, vanilla extract, and a pinch of salt to the chocolate mixture.
- Using the rubber spatula, fold gently until the pistachio paste is fully incorporated and the color is an even pale green-beige.
- The mixture should smell nutty and smooth.
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Ready when: No streaks of pistachio paste visible; color is uniform and fragrant
Tip: If the pistachio paste is very thick, warm it gently for 30 seconds in the microwave before folding so it distributes evenly.
5
Whip heavy cream
- In a separate large chilled bowl, using an electric mixer or whisk, beat the cold heavy cream until stiff peaks form, about 3–4 minutes.
- The cream should be thick enough to hold its shape but still soft and billowy (do not overbeat into butter).
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Ready when: Cream forms stiff peaks that hold their shape; texture is smooth and glossy
Tip: Watch carefully near the end—overbeating even slightly can break down the cream and make it grainy.
6
Fold in whipped cream
- Add half of the whipped cream to the pistachio-chocolate mixture and fold gently until almost completely combined.
- Then add the remaining whipped cream and continue folding with a figure-8 motion until the mousse is light, fluffy, and uniformly colored, with no large streaks of cream remaining.
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Ready when: Mousse is pale green-beige, fluffy, and no white streaks of cream visible
Tip: Add the cream in two batches to make folding easier and reduce the risk of deflating the mousse.
7
Divide into serving glasses
- Spoon or gently pipe the mousse into 6 serving glasses or bowls (about ¾ cup each), dividing evenly.
- Smooth the tops with the back of a spoon if desired, or leave them slightly rustic with peaks.
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Ready when: All mousse is evenly distributed among glasses
Tip: Chill the glasses before filling for a more elegant presentation and to keep the mousse cold.
8
Chill and set
- Cover the mousse glasses loosely with plastic wrap and refrigerate for at least 3 hours (or up to 8 hours ahead).
- The mousse will firm up slightly and flavors will meld.
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Ready when: Mousse is firm but still creamy, flavors are well-developed
Tip: Do not freeze; the mousse's delicate texture works best when chilled but not frozen solid.
9
Garnish and serve
- Just before serving, top each mousse with a sprinkle of crushed roasted pistachios and, if desired, a small piece of edible gold leaf for elegant presentation.
- Serve chilled, straight from the refrigerator.
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Ready when: Garnish is evenly distributed on top of each mousse
Tip: Add garnish just before serving to keep the pistachios crunchy; if added too early, they'll soften from the mousse's moisture.

Good to know

Tips

Use pasteurized eggs, especially if serving to pregnant women, young children, or the immunocompromised; pasteurized eggs are safe to eat raw or undercooked.
White chocolate scorches easily; keep the double boiler water at a gentle simmer and stir frequently to prevent a grainy texture or burnt flavor.
For a more intense pistachio flavor, use natural pistachio paste (which has just ground pistachios, no added sugar); reduce white chocolate to 4 oz (110 g) if the nuttiness overpowers.
This mousse is best served very cold; chill serving glasses in the freezer for 10–15 minutes before filling for the most luxurious mouthfeel.

Make ahead

Make the mousse up to 8 hours ahead; cover and refrigerate. Garnish with pistachios no more than 30 minutes before serving to preserve crunch.

Storage & reheating

Store covered in the refrigerator for up to 2 days. This mousse does not freeze well due to its delicate aerated texture. To serve chilled leftovers, gently stir if the texture has separated slightly, or re-whip briefly with a fork.

Substitutions

Pistachio paste (unsweetened or lightly salted) → Almond butter or blanched almond paste. Will lose the pistachio flavor but maintains the nutty profile; almond is slightly more astringent, so reduce by 1 tablespoon if the flavor is too strong.
White chocolate, finely chopped → White chocolate compound coating or high-quality white baking chips. May be slightly sweeter or less smooth; stir in 1 teaspoon of cocoa butter or oil if the mixture seems too thick.
Pasteurized egg yolks, large → 3 tablespoons of pasteurized liquid egg yolks or 2 pasteurized whole eggs. Liquid yolks may require whisking longer (up to 4 minutes) to achieve ribbon stage; whole eggs will make the mousse slightly less rich.
Heavy cream, cold → Crème fraîche or mascarpone (whipped with 2 tablespoons of milk to loosen). Will add tanginess; use equal weight (300 ml of crème fraîche or 180 g mascarpone thinned with 30 ml milk).