Add the butter to a mixing bowl and using an electric mixer, blend until creamy

Add half of the sieved icing sugar and milk to the bowl and using a spoon, gently stir together until just combined (this helps to prevent an icing sugar explosion!), before mixing with the electric mixer

Add the remaining icing sugar and follow the steps above, do not be afraid to overmix, you want this to be nice and smooth

Add the whipping cream and blend on low for a few minutes. Then change to high for roughly 5 minutes, it may seem curdled but keep whisking and you will get pass that stage

Place in a piping bag and decorate your cupcakes, or simply pile on top of each cake with a knife or the back of a spoon