Ingredients:
For the sponge cake:
4 eggs (at room temperature)
200 g of sugar
100 ml of milk
100 ml vegetable oil (e.g. rapeseed)
200 g wheat flour
1 teaspoon baking powder
1 teaspoon vanilla extract
For the icing: 200 g butter
150 ml of milk
100 g powdered sugar
3 tablespoons of cocoa
