Homemade chocolate mousse comes together from four ingredients: dark chocolate, eggs, sugar, and cream. Twenty minutes of work, two hours in the fridge, and it turns out airy, velvety, and deep in flavor. It's the easiest dessert to take credit for.
Homemade Chocolate Mousse
Airy, velvety chocolate mousse made the classic French way: melted dark chocolate lightened with whipped cream and whipped egg whites, chilled until set.
Ingredients
- 7 oz dark chocolate, 65-70% (200 g, broken into pieces)
- 4 large eggs eggs (separated into yolks and whites)
- 3 tbsp sugar (divided: 1 tbsp for yolks, 2 for whites)
- 1 cup heavy cream (200 ml, 38% fat)
- 1 tsp vanilla extract
- Cocoa powder (for garnish)
Instructions
Melt the chocolate over a double boiler (a bowl set over a pot of hot, not boiling, water), stirring until fully smooth. Set aside to cool slightly.
Whip the heavy cream to soft-medium peaks, not too stiff. Keep it in the fridge.
Whisk the egg yolks with 1 tbsp sugar in a bowl over the double boiler and heat, stirring, until the mixture warms and thickens slightly (about 149°F / 65°C). Remove from heat and stir in the vanilla.
Whip the egg whites with 2 tbsp sugar to stiff, glossy peaks.
Stir the yolk mixture into the cooled chocolate. Fold in the whipped cream with gentle strokes. Finally, fold in the whipped egg whites in three additions.
Divide among individual cups. Cover with plastic wrap and refrigerate for at least two hours. Serve with a dusting of sifted cocoa powder.
Why Everyone Thinks It's Hard
It's the eggs. Classic chocolate mousse uses yolks and whites that aren't fully cooked, and that makes some people uneasy. The simple fix: the yolks go through a brief double-boiler step that heats them enough, and the whites are whipped, which carries little inherent risk on their own.
The other thing that puts people off is the texture: "how do I know if I've whipped it right?" Stiff peaks means that when you lift the whisk, the peak holds its shape. Whipped egg whites work the same way, just with finer bubbles.
The Technique: Fold, Don't Stir
All the airy components (whipped cream, whipped egg whites) get folded into the chocolate. Folding means scooping from the bottom up in a half-turn, half-turn motion. Air bubbles equal an airy texture. Broken bubbles equal a flat mousse.
Why It Needs Two Hours
The mousse needs time to set. Straight off the stove it's liquid. After an hour: creamy. After two hours: full mousse. After a night in the fridge: even deeper in flavor. You can make it a day ahead and keep it covered and chilled.
Frequently Asked Questions
Is the mousse safe if the eggs aren't fully cooked?
The yolks go through a brief double-boiler cook to about 149°F (65°C), enough to pasteurize them. For extra caution, there are chocolate mousse recipes that skip eggs entirely and use only cream, slightly less airy but entirely safe.
Dark chocolate at 70% versus 55%: which is better?
70% gives a deeper, more bitter mousse. 55% gives a balanced mousse that suits most palates. If you're not sure, 60-65% is the sweet spot.
Can I make white chocolate mousse?
You can, but white chocolate tends to seize. Keep the temperature very low while melting it and add a higher ratio of cream.
What can I add for extra flavor?
A teaspoon of vanilla extract, a tablespoon of coffee liqueur or rum, or a bit of instant coffee, all of these deepen the chocolate flavor. A pinch of coarse salt right before serving is a surprising contrast.
How long does the mousse keep in the fridge?
Up to 3 days, covered. After a full day it firms up more. To soften it again, take it out 20 minutes before serving.
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