Preheat oven to 170 degrees Celsius.

Beat butter and castor sugar till soft and creamy. Add eggs, one at a time, beating well after each addition.

In another separate bowl, sift flour, cocoa powder, baking powder and salt 3 times. Fold in the sifted ingredients into the creamed mixture alternately with milk, starting and ending with flour.

Pour the batter into a well greased and floured 8 inches square cake tin. Level the top and bake the cakes for 45 to 50 minutes or until a skewer inserted in the center of the cake come out clean.

Remove the cake from the oven and let it cool in the tin for 5 minutes before turning it out onto a wire rack to cool completely before decorating.

Once the cake is completed cooled, level the top and place it on a cake board.

Cover it with generous amounts of ganache. Using a palette knife, create the spikes effect on the ganache on the cake. All you need to do to create the spikes is use the tip of your palette knife (spatula) and move it on the ganache so that it creates tiny wave-like patterns.

Make the piggy cake topper few days in advance. This is to allow the pig topper sufficient time to set and harden.

Use the fondant tools to shape the fondant pig.

It is also advisable to make the cookie fence ahead of time. To make this, simply roll long ropes of black fondant. Tie the cookie sticks together with the fondant to form the fence. If this is difficult to do, try to stick the cookie sticks together with some melted chocolate first to help them stay in place while you attach the black fondant strips.

Make total of 4 fences for the cake, to form a 'closure' for the cute piggy. You may want to make an extra one or two fences for contingency.

To assemble the cake, position the cookie fence on the cake by poking the fence very gently into the chocolate cake.

Once the edible cookie fence is in place, place the fondant pig cake topper in the center. If you plan to transport the cake elsewhere, it is better to insert a wooden pick or a straw to the bottom of the pig cake topper and use it to attach the topper securely to the cake.

Once the topper is in place, dab some chocolate ganache randomly on the pig to give it a messy mud effect.

And finally, cut the flowers and leaves and attach them to the ganache on the cake, followed by the birthday wishes plaque.