1. Milk and corn oil emulsify evenly.
2. Add egg yolks.
3. Stir well.
4. Add lemon juice to the egg whites.
5. The caster sugar is added to the egg whites in 3 times, and it is beaten until moist foaming.
6. Take a small portion into the egg yolk, stir evenly and pour it back into the egg white.
7. Stir again and mix evenly.
8. Spread a layer of pork floss on the baking sheet.
9. Pour in the cake batter, sprinkle an appropriate amount of pork floss on the surface, put it in the middle of the oven and bake at 180 degrees for 20 minutes.
10. After being baked, let it cool and roll it into a roll.
