1. Place all ingredients into a bowl fitted with a whisk.
2. Mix for 1 minute on low speed.
3. Scrape down.
4. Mix for 5 minutes on high speed.
5. Mix for a further 1 minute on low speed.
6. Scale at 1kg per 18x30 sheet.
7. Bake at 230℃ for 4 minutes, or until lightly baked.
8. Remove from the baking tray.
9. Allow at least 30 minutes to cool and for the cake to settle before filling and rolling.