Mousse with two chocolates (Slideshow version)
Stage 11/13 : 5 min.
Finish by folding this in, preferably with a soft spatula, leaning the bowl on its side to make the movement easier.There's no getting away from it; this is the trickiest moment of the recipe. The aim is to incorporate the egg whites into the chocolate, but losing as little as possible of their lightness. So no hard beating, just gentle folding with the spatula.