Adapted from Julia Child's Mastering the Art of French Cooking via David Lebovitz Notes: I use Guittard Chocolate, 64% cacao. Lebovitz used Green and Black, 72% cacao. I mention this because I cut the sugar to ½ cup due to the extra sugar in the chocolate. If you are using a darker chocolate, you might want to use ⅔ cup sugar, which is what the original recipe calls for. What I love about this recipe is that there isn't any whipped cream. One recipe I tried this week tasted too much like chocolate-flavored whipped cream. This one has body with a nice lightness thanks to the whipped egg whites. The key to making this recipe successfully is getting those egg yolks to that pale yellow ribbon stage — see DL's photo for guidance. If you don't get that consistency in the yolks, the finished mousse will not have that nice chew.