Start by making a simple ganache, which is a blend of chocolate and cream. This ganache forms the base of our chocolate mousse. Place the chocolate chips and 2 tablespoons of cream in a microwave-safe bowl. Microwave on high for 20 seconds, then stir. Let the mixture sit for 5 minutes to allow the chocolate to melt further. Stir until completely melted and set aside to cool.
In a medium-sized bowl, pour in the remaining cream. Use an electric hand mixer or a whisk to beat the cream until it forms medium peaks, which you'll recognize when the peaks hold their shape, with tips slightly bending back.
If desired, reserve a tablespoon of whipped cream for topping and refrigerate. Gently fold half of the remaining whipped cream into the cooled chocolate using a spatula, then incorporate the rest. Folding means combining the ingredients in a way that retains their lightness.
Transfer the mixture into a small ramekin or dessert bowl. Cover and refrigerate. The mousse typically sets within an hour, but leaving it longer in the fridge results in a firmer texture.
Top with whipped cream, if desired.
Notes
Melting and Cooling Chocolate: To prevent burning, melt the chocolate gradually and gently. After melting, allow it to cool slightly before combining with the cream, which helps avoid curdling.
Achieve Perfect Cream Peaks: It's crucial to whip the cream until it reaches medium peaks. You'll know you've hit this stage when the cream forms a peak that gently bends at the tip as you lift the whisk. An electric hand mixer is recommended for its speed and ease, but a large whisk is a good alternative for hand-whipping.
Folding Technique for Cream and Chocolate: When combining the whipped cream with the melted chocolate, use a gentle folding technique. This means carefully mixing the two without vigorous stirring, to maintain the light, airy texture of the mousse.
Chill Before Serving: Refrigerate the mousse for at least an hour for the best flavor and consistency.
Garnishing Options: Enhance your chocolate mousse by topping it with shaved chocolate, a dollop of whipped cream, or a sprinkle of nuts for added texture and flavor.