Preheat your oven to the recommended temperature stated in your recipe.
Grease and line a 7" cake tin with parchment paper to prevent the cake from sticking.
Beat butter and sugar in a large mixing bowl until it turns light and pale
Then add 4 eggs, one at a time and continue beating until the mixture becomes pale and creamy. Now add the vanilla extract.
Add cake flour with baking powder into the mixture and gently fold it using a spatula. Alternatively, you can mix the batter at low speed using an electric beater.
While mixing the cake flour add milk at room temperature to maintain the consistency of the cake batter.
Divide the batter into 4 portions and colour with orange and green food colouring. Keep 2 portions of the batter white.
Layer the batter into the prepared cake tin and smooth the top with a spatula. Watch the video to see how -
Bake the cake in the preheated oven at 170 ℃ for 50 to 55 minutes, or until a toothpick inserted into the center comes out clean.
Once baked, remove the cake from the oven and let it cool in the tin for a few minutes before transferring it to a wire rack to cool completely. Cut and serve!