The Ultimate Chocolate Mousse recipe is one you'll need to have in your arsenal. It is not difficult to make and you can make your own adjustment as far as sweetness and bitterness is concerned. The darker the chocolate the more bitter and less sweet the chocolate mousse.
Cut the chocolate in small pieces, add 2 tablespoons of warm water and melt it. (NOTE 3)
One the chocolate is melted, add the instant coffee powder and the butter and mix this until smooth. Set aside to cool a little.
In separate bowls, whip the egg whites and whipping cream stiff and place the bowls in the fridge.
Mix the egg yolk with the sugar until white and creamy.
Add the slightly cooled chocolate to the egg yolk-sugar mixture.
Add part of the egg white to the chocolate mixture and then add the chocolate mixture to the rest of the egg whites.
Add the whipped cream and mix well, but tenderly. You don't want to end up with white areas, but you also don't want to mix the air out of the mousse.
Divide over 2 dessert bowls and refrigerate at least 2 hours.
Decorate with fruit or mint or both.
Notes
If you prefer a lighter chocolate, a mix of dark and milk chocolate will work equally well.
It is not easy to divide an egg white, due to the gel-like structure. There are 2 ways to get 1/2 egg white
Whip the egg white until you break the gel-like structure and then pour half off.,
Use liquid egg white. 1 large egg white = 2 tablespoons of liquid egg white. For this recipe you'll need 1.5 egg whites, that translates into 1 egg (you will also use the egg yolk) and 2 tablespoon of liquid egg white.
Melting chocolate can be done in a microwave or au-bain-marie.