Accessories: proper amount of oil and salt.
step
1. Add sugar to light milk and stir until it bubbles to make cream. .
2. Add sugar to egg yolk, stir vegetable oil into batter, and add cream.
3. Put it in a baking tray, steam the pumpkin, cut it into cubes and embed it in the batter.
4. Bake in the oven 180 degrees for 20 minutes.
5. Take it out after baking.
6. Spread cream on the cake.
7. Spread the cream evenly.
8. Then roll it up.
9. Slice and plate.