Mint Chocolate... in anything... is divine. But a rich Mint Chocolate Mousse, with 3 ingredients that takes 5 minutes, literally, is almost unbelievable. Except... it's not. It is possible and absolutely delicious.
Add ice cubes to a larger bowl and fill it ¾ full. Nest a smaller bowl into the ice. You will pour the melted chocolate sauce into this second bowl to whisk. Set aside.
Pour the water into a saucepan, add the sugar and mint extract, whisk to combine. Then, over medium-low heat, whisk in the chocolate until completely smooth.
Pour the melted chocolate into the nested bowl on top of the ice cubes. Whisk vigorously with a handheld whisk or electric mixer. If using an electric mixer, the sauce will thicken quickly. Whisking by hand will take a few minutes. This process creates large air bubbles in the sauce which allows it to thicken and become a mousse.
Once strands of chocolate form inside the loops of the whisk, spoon immediately into ramekins or small containers to firm and set. I refrigerate the mousse for 15-30 minutes to speed up the process.
Garnish with whipped cream and fresh mint leaves.
Notes
Dark Chocolate:
This recipe is so simple that it relies heavily on quality chocolate. Look for brands like Valrhona, Scharffen Berger, or Ghirardelli. The chocolate should be at least 70% cocoa.
Mint Extract:
Less is more with mint extract. Be careful not to overpower the mousse.
Getting the Chocolate Just Right:
If the mousse is heavy, melt the mixture again, add some water and whisk once more.
It's possible to over whisk the mixture. If it becomes grainy, simply melt the mixture and whisk again, adding nothing more to it.