Preheat the oven @180° C for 10 minutes with both rods on.
Line cupcake moulds or tray with liners. If you don't have liners simply grease them with oil or butter.
In a mixing bowl add in the orange juice, sugar, oil, essence, lemon juice, orange zest. Mix well to combine and allow sugar to dissolve.
Sieve in the flour, baking powder, baking soda and salt.
Gently fold the wet ingredients and dry ingredients into a smooth and lumpsfree batter.
Scoop the batter onto the lined cupcake moulds till ¾th of the cavity.
Bake the cupcakes at preheated oven @180° C for 20 minutes or until a skewer inserted comes out clean.
Remove from the oven. Transfer the cupcakes onto a cooling rack and allow to cool down completely.
Take the chilled chocolate ganache and whisk it with spoon or spatula. You can also use wired hand whisk.
Place your desired noozle onto the piping bag.
Put the ganache onto the piping bag. Gather the mouth of the piping bag and twist it. Pipe as desired.
I have used N1 star nozzle and piped beautiful rosette.