Some carbs in the form of freshly pressed orange juice to give sweetness, as cocoa is very bitter. Very rich dessert.

Recipe for chocolate orange mousse

Ingredients
300g mascarpone cheese
Juice of a large very ripe sweet orange
25g cocoa powder
4 squares 85% cocoa dark chocolate

Mix mascarpone cheese, cocoa powder and squeezed orange juice in a bowl.
Put mousse in individual small bowls, grate dark chocolate on top & chill in the fridge for 3 hours.
Serve with black coffee, dessert wine or cognac