Chocolat Amer Recipe

Prepare and preheat

Preheat the oven to 350°F (175°C). Grease a 9-inch round cake pan (or two 8-inch pans) and line the bottom with parchment; grease the parchment.

Combine dry ingredients

In a large bowl, sift together 1.5 cups all-purpose flour and 0.75 cup unsweetened cocoa powder. Whisk in 1.25 cups granulated sugar, 0.25 cup packed light brown sugar, 1 tsp baking soda, 0.5 tsp baking powder, and 0.75 tsp fine salt until evenly distributed.

Combine wet ingredients

In a separate bowl, whisk together 2 large eggs, 0.75 cup buttermilk, 0.75 cup hot strong brewed coffee, 0.5 cup melted & cooled unsalted butter, 0.25 cup vegetable oil, and 1 tsp vanilla extract until smooth. The hot coffee will thin the batter and bloom the cocoa for deep chocolate flavor.

Mix batter

Make a well in the dry ingredients and pour in the wet mixture. Stir with a rubber spatula until just combined and no large streaks of flour remain. Do not overmix. The batter will be thin—this is normal.

Bake

Pour batter into the prepared pan(s) and smooth the top. Bake in the preheated oven 28–35 minutes for a 9-inch pan (about 20–26 minutes for 8-inch pans), or until a toothpick inserted in the center comes out with a few moist crumbs but not wet batter. Rotate halfway if your oven has hot spots.

Cool

Allow the cake to cool in the pan on a wire rack for 10 minutes. Run a thin knife around the edge, invert onto the rack, remove parchment, and cool completely (at least 1 hour) before cutting or frosting. If using two layers, cool completely before trimming tops for even stacking.

Heat cream and combine with chocolate

Place 10 oz chopped bittersweet chocolate in a heatproof bowl. In a small saucepan, warm 1 cup heavy cream to a simmer (do not boil). Pour the hot cream over the chocolate, let sit 2 minutes to melt, then whisk gently from the center outward until smooth and glossy. Add 2 Tbs room-temperature butter and 1/4 tsp fine salt; whisk until butter melts and is incorporated. If using, whisk in 1 Tbs confectioners' sugar for slight sweetness and structure.

Chill ganache

Cover the bowl with plastic wrap and refrigerate until the ganache is firm but still scoopable — about 2–3 hours, or speed up by chilling 45–60 minutes then stirring every 15 minutes to even the temperature.

Whip to fluffy texture

Once chilled and spreadable, transfer ganache to the bowl of a stand mixer fitted with the whisk attachment (or use a hand mixer). Whip on medium-high speed until light, aerated, and spreadable — about 3–5 minutes. Scrape down the bowl as needed. The whipped ganache should be pipeable for filling and hold texture for frosting.

Warm cream and melt chocolate

Place 4 oz chopped dark chocolate in a small heatproof bowl. In a small saucepan, heat 1/2 cup heavy cream with 1 Tbs unsalted butter and 1 tsp light corn syrup (or honey) just until it begins to simmer—do not boil. Pour the hot cream mixture over the chopped chocolate and let sit 1–2 minutes, then whisk until smooth and fully combined.

Finish with Armagnac

Remove the sauce from heat and whisk in 3 Tbs Armagnac and 1/8 tsp fine salt. Taste and adjust: if the alcohol flavor is too strong, stir in an additional teaspoon or two of warm cream. Keep the sauce warm or at room temperature; it will thicken as it cools. If you need a thinner sauce for pouring, gently rewarm or whisk in a little warm cream (1 tsp at a time).

Level and optionally brush with Armagnac

If you baked one cake, trim the domed top to level and slice horizontally to create two layers. Lightly brush the cut surfaces with 1 Tbs Armagnac (optional) for flavor and moisture.

Fill and stack

Place the bottom cake layer on a serving plate or cake board. Pipe or spread a generous layer (about one-third to one-half of the whipped ganache) of whipped ganache over the cake, smoothing to the edge. Place the top layer gently and press lightly to adhere.

Frost

Use the remaining whipped ganache to crumb-coat the cake: apply a thin layer all over and chill 15–20 minutes to set. Finish with a final thicker coat of whipped ganache, smoothing with an offset spatula or creating textured swirls as desired.

Pour Armagnac sauce and garnish

Warm the Armagnac chocolate sauce slightly if chilled. Pour or drizzle a few tablespoons over the top of the cake so it runs decoratively down the sides; reserve some sauce to serve on the side. Dust the top lightly with 1 tsp unsweetened cocoa powder and scatter 2 Tbs chocolate shavings or curls. If desired, warm 1 additional Tbs Armagnac and brush sparingly on the cut sides for aroma.

Serve

Slice the cake with a hot, dry knife (wipe between slices). Serve each slice with an additional spoonful of the Armagnac chocolate sauce on the side. Store any leftover cake covered in the refrigerator up to 4 days; bring to near room temperature before serving for best texture.