Classic Chocolate Mousse

Ingredients

Equipment Needed

• •Large heatproof bowl for melting chocolate
• •Medium saucepan for double boiler setup
• •Stand mixer or hand mixer with whisk attachment
• •Large rubber spatula for folding
• •Six ramekins or stemmed glasses (6-ounce capacity)

Instructions

1. 1

   Melt the chocolate

   Set a heatproof bowl over a pot of barely simmering water. The bowl should not touch the water. Add the chopped chocolate and butter. Stir occasionally with a rubber spatula until melted and completely smooth, about five minutes. The mixture should be glossy and flow like warm honey. Remove from heat and let cool until the bowl feels warm but not hot to the touch, roughly ten minutes. Chocolate that's too hot will scramble your egg yolks.

   Chopping chocolate finely ensures even melting. Large chunks create hot spots that can cause the chocolate to seize.
2. 2

   Prepare the egg yolks

   While the chocolate cools, whisk the egg yolks with half the sugar (2 tablespoons) in a medium bowl until the mixture turns pale and thick enough to fall in ribbons when you lift the whisk. This takes two to three minutes of vigorous work by hand. The color should shift from deep orange to creamy yellow. This step matters because you're building structure and incorporating air that will help keep the final mousse light.

3. 3

   Combine chocolate and yolks

   Add the vanilla and salt to the cooled chocolate mixture and stir to combine. Pour the chocolate in a slow stream into the egg yolk mixture, whisking constantly as you pour. Work quickly but smoothly. The result should be a glossy, thick chocolate base that looks like dark satin. Set aside while you prepare the whites and cream.

4. 4

   Whip the egg whites

   In a spotlessly clean bowl (any trace of fat will prevent proper whipping), beat the egg whites with the cream of tartar using a stand mixer or hand mixer on medium speed until foamy. Increase speed to medium-high and gradually add the remaining 2 tablespoons of sugar. Continue beating until you reach soft peaks: the whites should hold their shape when you lift the beaters but the tips should curl over gently, not stand at attention. This takes three to four minutes. Stiff peaks will be difficult to fold and create a dense mousse.

   Room temperature eggs whip to greater volume. Cold whites are stubborn and refuse to aerate properly.
5. 5

   Whip the cream

   In another cold bowl, beat the heavy cream until it holds soft peaks, about two minutes. The cream should mound gently when you lift the beaters and flow slightly when the bowl is tilted. Overwhipped cream becomes grainy and will not fold smoothly into the chocolate. Better to underwhip than overwhip.

6. 6

   Fold in the egg whites

   Add about one-quarter of the whipped egg whites to the chocolate base. Stir vigorously to lighten the mixture. This sacrificial portion loosens the dense chocolate so the remaining whites can be folded gently. Add the rest of the whites in two additions, folding with a large rubber spatula: cut down through the center, sweep along the bottom of the bowl, fold the mixture over itself, and rotate the bowl a quarter turn. Repeat until no white streaks remain but the mixture still looks billowy. Twenty to twenty-five folds should do it.

   That first aggressive stir isn't optional. The chocolate is too thick to accept the delicate whites without this step to bridge the gap.
7. 7

   Fold in the cream

   Add the whipped cream to the lightened chocolate mixture. Fold gently using the same technique: cut, sweep, fold, rotate. Work until the cream is just incorporated and the mousse is uniformly colored with no streaks. The texture should be airy and billowy, holding soft mounds when spooned. If you've folded properly, the mousse will have visibly increased in volume and feel almost weightless when you lift the spatula.

8. 8

   Portion and chill

   Divide the mousse among six ramekins, small bowls, or stemmed glasses, spooning gently to preserve the airy texture. The mousse should mound slightly above the rim. Cover each with plastic wrap, taking care not to press against the surface. Refrigerate for at least four hours, or overnight. The mousse will set to a soft, spoonable consistency that holds its shape on the spoon but melts instantly on your tongue.

   For a dramatic presentation, pipe the mousse into glasses using a large star tip, building elegant swirls that show off the texture.
9. 9

   Serve with restraint

   Remove from refrigerator ten minutes before serving to take the chill off. The mousse should be cold but not icy. A small dollop of softly whipped cream and a few chocolate shavings are all the adornment this dessert needs. The color is deep and honest, the texture speaks for itself. Let the chocolate be the star.

Chef Tips

• •Chocolate quality determines everything. Seek out chocolate with 60-70% cacao content from a reputable maker. The ingredient list should be short: cacao, cocoa butter, sugar, perhaps vanilla. Anything listing vegetable oils or artificial flavors will disappoint.
• •If you're concerned about consuming raw eggs, use pasteurized eggs. They whip slightly less voluminously but the difference in the final mousse is minimal, and peace of mind is worth something.
• •For deeper complexity, dissolve one teaspoon of instant espresso powder into the melted chocolate. The coffee doesn't announce itself but makes the chocolate taste more like itself.
• •This mousse pairs beautifully with a glass of ruby port, a bold Banyuls, or a splash of Grand Marnier drizzled over the top just before serving.
• •Leftover mousse can be frozen in an airtight container for up to two weeks. Thaw overnight in the refrigerator. The texture softens slightly but remains pleasant.

Advance Preparation

• •The mousse must be made at least 4 hours ahead to allow proper setting. Overnight is ideal.
• •Covered tightly, the mousse keeps refrigerated for up to 3 days. The texture remains excellent.
• •You can chop the chocolate up to a week in advance and store it in an airtight container at cool room temperature.

Frequently Asked Questions

Nutrition Information

1 serving (about 190g)