1. Add sugar, salt, and vanilla extract to the egg yolk and mix, then add milk and vegetable oil and mix. Sift the soft flour, cocoa powder, and baking powder, mix, add red food coloring and mix to color.
2. When large bubbles appear while whipping the egg whites, divide the sugar into 2~3 times and whip it to make a meringue with soft horns. Add a small amount to (1) and mix.
6. Put the cream on the sheet and spread it flat. Put the cut strawberries on the beginning, cover with the cream, roll it up and harden it in the freezer for about 1 hour.
7. Put water, sugar, and starch syrup in a pot and boil it to 103 degrees, then add dark chocolate, white chocolate, fresh cream, and soaked gelatin, mix, and add red and white food coloring to color.