Chocolate mousse

Ingredients:

• 170 g semi-sweet baking chocolate, chopped
• 3 tablespoons unsalted butter, room temperature
• 3 large eggs, separate the yolks from the whites
• 0.5 tsp cream of tartar
• 1/4 cup + 2 tablespoons sugar
• 0.5 cups heavy cream, chilled
• 0.5 tsp vanilla extract
• Whipped cream and shaved chocolate, for serving

Preparation:

1. Place the chocolate and butter in a heatproof bowl set over a saucepan with 1 inch of simmering water (or use a double boiler). Stir with a wooden spoon until the chocolate is melted and the mixture is smooth. Remove the bowl from the heat and let cool slightly. Then, whisk the yolks into the chocolate sauce one at a time, whisking thoroughly until smooth after each addition.
2. In another bowl, beat the egg whites until foamy. Add the cream of tartar and beat until soft peaks form. Gradually whisk in 1/4 cup of sugar and continue beating until stiff peaks form.
3. In a chilled bowl, beat the heavy cream until it begins to thicken. Add the remaining 2 tablespoons sugar and vanilla and continue beating until soft peaks form.
4. Now that you have all the mousse ingredients prepared, it's time to combine them. Gently fold the beaten egg whites into the chocolate mixture with a spatula until it becomes light. Then fold in the whipped cream with a spatula. Be careful not to overmix the mousse, otherwise it won't be fluffy. Divide the mousse among four glasses, or, preferably, Moroccan glasses. Cover and refrigerate for a few hours. Before serving, garnish each serving with whipped cream and chocolate shavings.