Indulge in the perfect blend of lightness and richness with Martha Stewart's Chocolate Chiffon Cake, a timeless dessert that's as delightful to make as it is to savor. This airy, moist, and decadent cake is a testament to Martha's culinary genius, and it's a must-try for both novice and experienced bakers alike.
Understanding the Chiffon Cake Magic
Chiffon cakes are a unique hybrid of sponge cakes and butter cakes, characterized by their light, airy texture and moist crumb. The secret lies in the use of vegetable oil instead of butter, and the incorporation of beaten egg whites, which gives the cake its ethereal quality. Martha Stewart's Chocolate Chiffon Cake takes this classic structure and infuses it with rich cocoa powder, creating a dessert that's as visually stunning as it is delicious.
Gathering Your Ingredients
Before you begin, ensure you have all the necessary ingredients at room temperature. This includes:

- 2 1/4 cups (280g) all-purpose flour
- 1 3/4 cups (350g) granulated sugar, divided
- 3/4 cup (90g) unsweetened cocoa powder
- 1 tablespoon baking powder
- 1 teaspoon salt
- 1/2 cup (120ml) vegetable oil
- 7 large eggs, separated
- 1 cup (240ml) water
- 1 teaspoon vanilla extract
- 1/2 teaspoon cream of tartar
Martha's Tips for Success
Martha Stewart offers several tips to ensure your Chocolate Chiffon Cake turns out perfectly. First, she recommends sifting the dry ingredients to eliminate any lumps and incorporate air, which is crucial for the cake's light texture. She also suggests using a stand mixer to beat the egg whites, ensuring they reach the right consistency.
Baking the Cake
Preheat your oven to 325°F (165°C) and grease a 10-inch (25cm) tube pan. In a large bowl, combine the flour, 1 1/2 cups (300g) of sugar, cocoa powder, baking powder, and salt. Create a well in the center and add the vegetable oil, egg yolks, water, and vanilla extract. Mix until well combined.
In a separate clean bowl, beat the egg whites until foamy. Add the cream of tartar and beat until soft peaks form. Gradually add the remaining 1/4 cup (50g) of sugar and beat until stiff peaks form.

Gently fold the egg whites into the chocolate batter, ensuring no white streaks remain. Pour the batter into the prepared pan and smooth the top with a spatula.
Bake the cake for 55 to 60 minutes, or until a toothpick inserted into the center comes out clean. Invert the pan onto a cooling rack and let the cake cool completely, upside down. This step is crucial for maintaining the cake's light texture.
Serving and Storing
Once cooled, run a knife around the edges of the pan and gently remove the cake. Dust with powdered sugar or serve with whipped cream and fresh berries. Store any leftovers in an airtight container at room temperature for up to 5 days.
Nutritional Information
| Serving Size | Calories | Total Fat | Saturated Fat | Cholesterol | Sodium | Total Carbohydrate | Dietary Fiber | Protein |
|---|---|---|---|---|---|---|---|---|
| 1 slice (1/12 of the cake) | 320 | 11g | 1.5g | 85mg | 240mg | 52g | 3g | 6g |