Chef Christian Thornton serves the cake with caramel ginger ice cream and a berry compote, but for the home cook he suggests an infinitely easier ginger whipped cream: Beat 2 cups chilled heavy cream to soft peaks and fold in 1/4 cup finely chopped crystallized ginger. Its airy softness tempers the intensity of the rich chocolate.
You can make cake two days ahead and chill, covered. Bring to room temperature before serving.
Recipe information
Total Time
1 hr 40 min
Yield
Makes 12 to 16 servings
Ingredients
Preparation
Step 1
Preheat oven to 350°F. Butter a 10- by 2-inch round cake pan. Line bottom with a round of parchment paper and butter the paper.
Step 2
Put chocolates in a large shallow bowl. Bring water, 1/2 cup sugar, and spice to a boil, stirring until sugar is dissolved, then pour through a fine sieve set over chocolates. Stir until smooth, then stir in butter until smooth.
Step 3
Beat eggs with remaining 3/4 cup sugar until increased in volume and pale and beaters leave a distinct trail (4 to 5 minutes in a standing mixer or 15 to 20 with a hand-held). Stir 1/4 of eggs into chocolate to lighten and fold in remainder gently but thoroughly (fold 1 to 2 minutes).
Step 4
Pour batter into pan and smooth top. Put pan in a water bath and bake in middle of oven 40 to 45 minutes, or until a tester inserted in center comes out with moist crumbs adhering. Remove from water bath and cool 2 hours in pan on a rack.
Step 5
Unmold cake by running a thin knife around edge, then heating pan 5 to 10 seconds on burner set at moderately low. Invert cake plate over pan and flip cake onto plate. (If cake sticks, tap bottom of pan with a knife handle. If that doesn't work, heat pan again.) Peel off paper.
Step 6
Serve cake in thin slices.
