1, egg yolks and egg whites are completely separated, egg whites should not have a little impurity.

2, egg yolks add oil and milk and 20g sugar, mix well.

3. Sift in the flour and starch, and mix well, do not over mix.

4. Add a few drops of lemon juice to the egg white and add the remaining sugar in three batches, and beat with a whisk until stiff peaks form (solid cream).

5. Add the egg yolks to the meringue in three batches, and mix well like a stir-fry, but don't stir in circles or over-mix.

6, the oven is preheated, put in the oven 140 degrees bake 30 minutes after the temperature rise to 155 degrees continue to bake for about 15 minutes. Remove the inverted baking rack and let cool to unmold.