Cooking Steps

1. 

   Step1:Separate the albumen and yolk. Add corn oil, salt, flour, sugar and milk to the yolk and mix wel

2. 

   Step2:Whisk the egg white into vinegar until it's thick and add 1 / 3 sugar. Beat until it's fine and add 1 / 3 sugar. The bubble feels fine and add the last sugar. Beat until it's hard and foamy. Take 1 / 3 of the egg white and turn it up and down like a stir fry in the egg yolk paste. Then take 1 / 3 of the egg white and mix it up and down. Beat the egg yolk paste into the egg white and mix it up and down. Pour it into the mold. Bake it for 60 minutes and 150 degrees