Chocolate Brownie Mousse | Food Stuff

Ingredients

• 12 ounces bittersweet chocolate, roughly chopped
• Bittersweet chocolate shavings, for garnish
• 1/2 cup strongly brewed coffee
• 1/2 teaspoon cream of tartar
• 4 egg whites
• 6 large eggs
• 1/2 cup cold heavy cream
• 1 teaspoon salt
• 1 tablespoon sugar
• 1 1/4 cups unbleached white flour
• 1 1/4 cups unsalted butter
• 1 teaspoon vanilla extract
• 1 1/4 cups walnuts, roughly chopped
• 1 1/2 cups white sugar