Moist and Fluffy Castella Cake

A Classic Japanese Sponge Cake Recipe for Perfectly Soft and Delicate Sweetness

320 3 minutes read

Castella cake is a classic Japanese sponge cake known for its soft, moist texture and delicate sweetness. With its smooth golden top and bouncy interior, this cake is a perfect treat for any occasion. Its minimal ingredients, primarily eggs, sugar, flour, and honey, create a simple yet luxurious dessert.

Castella cake pairs beautifully with a cup of tea or coffee, making it a delightful companion for relaxed afternoons or as a charming addition to festive gatherings. This recipe ensures a foolproof, fluffy, and moist castella cake with just the right balance of sweetness. Preheat your oven to 170°C (340°F).

Line a loaf pan (8×4 inches) with parchment paper, ensuring it extends slightly over the edges for easy removal. Sift the bread flour twice to ensure a fine, lump-free texture. In a small bowl, combine 2 tablespoons of honey with 2 tablespoons of warm water. Stir until smooth and set aside. Crack the eggs into a large mixing bowl. Add the granulated sugar and whisk using an electric mixer on medium speed for about 8-10 minutes.

Place the bowl over a pan of warm water while whisking to slightly warm the eggs; this helps create a stable and fluffy batter. Continue until the mixture triples in volume becomes pale, and forms a ribbon when the whisk is lifted. Gradually sift the flour into the egg mixture in three batches. Fold gently using a spatula, moving in a circular motion from the bottom of the bowl to maintain the batter’s airiness.

Avoid overmixing. Slowly drizzle the honey solution into the batter, folding gently until fully incorporated. If using vanilla extract, add it at this stage. Pour the batter into the prepared loaf pan. Tap the pan lightly on the counter to remove large air bubbles. Place the pan on the middle rack of the oven and bake at 170°C (340°F) for 10 minutes.

Reduce the temperature to 160°C (320°F) and continue baking for 30-35 minutes. The cake is done when the top turns golden brown and a skewer inserted in the centre comes out clean. Once baked, remove the cake from the oven and let it cool in the pan for 10 minutes. Carefully lift it out using the parchment paper and transfer it to a wire rack.

Wrap the cooled cake in plastic wrap and refrigerate for 6-12 hours before serving. This resting period enhances its moisture and flavour.

Expert Tips for Success;

Use Bread Flour: Bread flour gives castella its signature chewy texture. Avoid substituting with cake or all-purpose flour for best results.
Maintain Airiness: Gently fold the batter to avoid deflating it. The key to a fluffy castella is retaining as much air as possible.
Monitor Temperature: A two-step baking process ensures an even rise and prevents the cake from collapsing.
Rest the Cake: Allowing the cake to rest overnight helps it develop its characteristic moistness.

Customization Ideas and Variations;

Flavour Variations: Add matcha powder for green tea castella or cocoa powder for a chocolate version. Sift 1-2 tablespoons of your chosen ingredient with the flour.
Sweetness Levels: Adjust the honey for a more or less sweet cake. Maple syrup can also be used as a substitute.
Shape and Size: Try baking in round or square pans for different presentations, but adjust the baking time accordingly.
Dietary Modifications: For a dairy-free version, replace honey with agave syrup or other plant-based alternatives.

Serving Suggestions;

Serve slices of castella cake with a cup of green tea for a traditional Japanese experience.
Add a dollop of whipped cream or a drizzle of chocolate syrup for a decadent dessert.
Pair with fresh fruit like strawberries or oranges to balance the sweetness.

Storage, Reheating, and Make-Ahead Tips;

Storage: Wrap the cake tightly in plastic wrap and store it in the refrigerator for up to 4 days.
Reheating: Serve at room temperature or warm slightly in the microwave for a few seconds.
Make-Ahead: Castella cake is best made a day in advance. Prepare it the night before for optimal flavour and texture.

Castella cake is a simple yet elegant dessert that brings joy to any table. Its moist, fluffy texture and delightful sweetness make it a favourite for tea time, celebrations, or as a heartfelt homemade gift.

With this easy recipe, you’re on your way to creating a masterpiece that will impress family and friends alike. Happy baking, and enjoy every soft, delicious bite.