Chocolate Roll Cake Banh Cuon Chocolate

How to Prepare
Preheat & Line Pan:

Preheat oven to 350F 177C.

Line a 12×18-inch sheet pan with parchment paper.

Prepare the Cake Batter:

Separate egg yolks and whites.

Beat egg yolks with 1/2 cup sugar until pale yellow and thick.

Add vegetable oil, milk, and vanilla extract; mix well.

Sift cake flour, cocoa powder, baking powder, baking soda, and salt; add in thirds to the egg yolk mixture.

Beat egg whites with cream of tartar until foamy, then gradually add 1/4 cup sugar; beat to stiff peaks.

Fold egg whites into the batter in thirds.

Bake the Cake:Spread batter evenly in the prepared pan.

Bake for 10-12 minutes. Check doneness with a light touch or a toothpick.

Cool for 5 minutes, then transfer to a powdered sugar-dusted kitchen towel and roll up to cool completely.