Extra ingredients:
I absolutely love spicy chocolate! If you want to taste something different add a pinch of chili powder in the chocolate mousse. It will be amazing!
Also, you can get that spicy flavor by adding ground Sichuan pepper berries. Just a pinch or two are enough to get a unique aroma.
If you want something with a seasonal flavor you can add some cinnamon and a pinch of ground cloves. It will smell and taste like Christmas!