Prep time - 35 minutes Cooking time - 25 minutes Step 1 Step 2 Step 3 Step 4 Step 5 5 eggs 200 grams/7 OZ granulated sugar Pinch of salt 80 mililiters/3 OZ canola oil 170 grams/6 OZ simple flour 1 teaspoon baking powder 240 grams/8.5 OZ buttercream mix 600 mililiters/21 OZ milk Green food coloring Sprig of fresh mint Handful of blueberries Preheat the oven to 180C/360F In a large bowl, whisk together the eggs, sugar and salt Add oil and sieve in flour and baking powder Mix carefully until the ingredients are fully incorporated Pour batter into a non-stick cake pan. Bake for 35 minutes In a large bowl, combine the buttercream mix and milk. Whisk until the texture is fluffy and light Using green food coloring, make 4 cups of diferent shades of green buttercream. Leave half of cup buttercream un-dyed Slice the baked cake into 6 equal pieces Spread buttercream on top of each piece. Stack the layers on top of each other. Start with white buttercream and end with dark green Stack the top layer of cake. Spread white buttercream on top Decorate with mint leaves and blueberries