Flourless Chocolate Orbit Cake - cooking recipe

Ingredients

1/2 lb butter (2 sticks)
12 ounces bittersweet chocolate
6 eggs
1 cup sugar

Preparation

Position the oven rack in the center of the oven. Preheat the oven to 350 degrees. Butter a 9 x 2-inch round cake pan and line the inside with a round of parchment paper. (I don't keep parchment paper on hand and use nonstick cooking spray in the pan instead and it works fine).
Set a large bowl over a pan of simmering water to create a double boiler. Cut the butter and chocolate into small pieces and put them in the bowl to melt, whisking occasionally.
Whisk together the eggs and sugar in another bowl. Thoroughly whisk in the melted chocolate.
Pour the chocolate batter into the cake pan. Place it in a larger baking pan and pour in warm water to reach halfway up the sides of the cake pan. Cover tightly with foil and bake for 1 hour and 15 minutes, until the cake appears to have set and when you touch the center, your finger comes away clean.
Remove the cake from the water bath and cool completely before serving, plain or with creme anglaise (posted separately).
Note: This cake can be refrigerated for several days.