Castella Cake (Japanese Honey Egg Sponge Cake)
Quick answer
Castella is a Japanese sponge cake descended from the pao de Castela brought by Portuguese missionaries to Nagasaki in the sixteenth century, then reimagined over generat...
What makes this special
- Japanese Castella Cake rises on whipped air alone to maintain a moist, honeyed crumb.
- Honey and starch syrup keep it moist for days; rises on whipped air alone
- Sugar sinking to wooden mold base caramelizes into a chewy bottom crust
Key ingredients
Core cooking flow
- 1 Bring 4 eggs to room temperature and sift 110g bread flour at least twice.
- 2 Whip 4 eggs with 120g sugar on high speed for 8 or more minutes until batter...
- 3 Fold in sifted bread flour in three additions using large strokes from bottom to top.
Castella is a Japanese sponge cake descended from the pao de Castela brought by Portuguese missionaries to Nagasaki in the sixteenth century, then reimagined over generations into something distinctly Japanese. The batter works without baking powder, relying entirely on extended, vigorous whisking of whole eggs to build a stable foam that lifts the cake during baking. Honey and millet jelly are added together, and this combination keeps the crumb moist for several days after baking. The flour ratio is kept unusually low, producing a fine, even grain that springs back slowly when pressed. Baked in a rectangular wooden frame lined with paper, the cake develops a thin caramelized layer along the bottom where sugar settles and browns under heat, creating a slightly chewy base that contrasts with the airy body above. The cake improves noticeably from the day after baking, once moisture has distributed evenly through the crumb and the honey flavor has deepened. Green tea is the traditional accompaniment, its bitterness countering the cake's mellow sweetness. Castella shops in Nagasaki still compete on their precise methods, some guarding recipes that have remained unchanged for centuries.
Instructions
Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.
- 1Step
Bring 4 eggs to room temperature and sift 110g bread flour at least twice.
Line the mold with parchment paper and preheat the oven to 170°C.
- 2Season
Whip 4 eggs with 120g sugar on high speed for 8 or more minutes until batter falls in ribbons that hold for 3 seconds.
Warm 25g honey and 30ml milk together until blended.
- 3Finish
Fold in sifted bread flour in three additions using large strokes from bottom to top.
Keep mixing under 40 strokes per addition to preserve air bubbles.
- 4Prep
Gradually pour the honey mixture into the batter while gently folding.
Add 20g melted butter last for sheen and pour the batter into the mold from a height to release air bubbles.
- 5Heat
Bake at 170°C for 40 minutes until a skewer inserted in the center comes out clean.
Invert the mold immediately onto a wire rack so the top stays moist.
- 6Prep
Once fully cooled, trim the edges with a knife and slice into 1.5-2cm pieces.
Store in an airtight container at room temperature for one day to allow the texture to become even more moist.
After the steps
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