IN THIS LESSON
This sponge is light, flexible, and designed for rolling without cracking.
Ingredients
4 whole eggs
3 egg yolks
85g sugar
35g flour
40g potato starch
Before You Start
Eggs should be at room temperature
Do not over-mix after folding
Prepare your baking tray and parchment
Method
Preheat oven to 170–175°C (340–350°F)
Separate eggs (keep whites clean, no yolk)
Beat egg yolks with 2/3 of the sugar until thick and pale (ribbon stage)
In another bowl, beat egg whites until soft peaks
Add remaining sugar and beat to medium peaks
Fold 1/3 of egg whites into yolk mixture to lighten it
Add remaining egg whites and fold gently
Sift flour and potato starch
Fold into batter carefully
Spread evenly in lined tray
Bake 10–15 minutes until lightly golden
What to Look For
batter light and airy
smooth surface
sponge springs back when touched
Common Mistakes
overmixing → dense sponge
underwhipped eggs → flat cake
over-baking → cracks when rolling
Finishing Tip
Roll the cake while slightly warm to prevent cracking.
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