Pour the milk into a saucepan, add the dark chocolate pieces, and heat it over medium heat.
Stir the chocolate gently until the chocolate is fully melted and the mixture is smooth.
Remove the saucepan from the heat, and allow the chocolate mixture to cool to room temperature, stirring occasionally to prevent a skin from forming.
Whisk the mixture with an electric mixer. Whisk until the mixture becomes light and airy, resembling a mousse. This may take 5-6 minutes, so keep whisking until the desired consistency is reached.
Pour the mousse into a serving glass and chill it for 8 hours to set.
Serve and enjoy this simple and delicious chocolate mousse!
Notes
Use Good Dark Chocolate: The quality of your chocolate makes a big difference. Go for dark chocolate with 60-70% cocoa for a rich, smooth mousse. Avoid chocolate chips, as they can affect the texture.Melt Chocolate Gently: Stir the chocolate slowly as it melts in the milk. Stirring too quickly can add air bubbles, making the texture grainy. Keep stirring until it’s smooth and glossy.Cool the Mixture: Let the chocolate mixture cool to room temperature before whisking. This step is crucial to prevent the mousse from separating or becoming too runny. Stir it occasionally as it cools to avoid skin forming.Chill Before Whisking: Refrigerate the mixture for 20-30 minutes before whisking. This helps it set slightly, making it easier to whip into a light, airy mousse.Whisking: Use an electric mixer at medium speed to gradually incorporate air. Whisk for 5-6 minutes to achieve a smooth, airy texture. Take your time—don’t rush this step.Proper Chilling: After pouring the mousse into serving glasses, chill for at least 8 hours to set it fully. If you're short on time, 4-6 hours might work, but overnight is best.Storage: Store the mousse in the fridge for up to 3 days. Cover the glasses with plastic wrap to keep them fresh and prevent them from absorbing other flavors.