Cooking Steps

1. 

   Step1:Separate the egg white and yolk. Add 20g white sugar to the yolk. Stir evenly by hand. Add salad oil, yoghurt and vanilla essence respectively and mix evenly. Finally, add flour and mix evenl

2. 

   Step2:Whisk the egg white with lemon juice until it's thick. Add 30g sugar in three times. Whisk until it's ready to be picked up

3. 

   Step3:Add the beaten egg white into the yolk flour three time

4. 

   Step4:Pour in the tray, shake out the bubbles. Bake the oven at 170 ℃ for 15 minutes, then take out and buckle it on the iron net

5. 

   Step5:When the cake is a little cold, spread the whipped cream evenly on the cake. Put more on the beginning of the roll and less on the end. Place the strawberries at the beginning of the roll and roll them up

6. 

   Step6:Wrap it with oil paper and put it into the refrigerator for freezing and shapin