How to cook
Use the same cup to measure the flour, sugar, cocoa and milk.
Put all the ingredients into a bowl and mix them with a wire whisk.
Pour the mixture into a cake pan lined with baking paper and bake in a preheated oven at 356°F (180°C) for about 35-40 minutes.
Check the sponge cake with a toothpick and decide whether the cake is ready or needs another 3-4 minutes.
Allow it to cool and it's done.