Master the Art of Crafting a Fluffy Rollcake

Part 1:
Prepare the baking pan by making cuts in the corners to make it higher than the baking sheet and tightly place paper on the roll baking sheet.

Part 2:
Make the roll cake batter by whisking together the whole eggs and granulated sugar until thick and whitish. Then mix in the sifted flour and add the mixture to a container of warmed butter and milk.

Part 3:
Pour the batter onto the baking sheet, level the surface, and bake in a preheated oven at 190 degrees for 12-14 minutes. Once baked, remove from the oven and let it cool.

Part 4: