Rollcake

Cooking Steps Directions Ingredients For the Pattern :                                                1 egg white30 g sugar40 flour20 g butter, room temperaturefood coloring Sponge Cake :4 eggs1 teaspoon baking soda100 g + 1 tablespoon of sugar60 g flour60 g melted butter2-3 tablespoon cocoa Cream Filling:200 g white chocolate250 g whipped creamstrawberries White chocolate cream:...