Use this to decorate my Fancy Chocolate Fairy Cakes.
50g Mortimer White Chocolate Couverture
100g icing sugar
1 tablespoon milk
Melt the couverture in a small bowl, set over a pan of barely simmering water.
In a large bowl, beat the butter until soft, then sieve in the icing sugar, add the milk and melted couverture.
Beat together until combined and smooth.
Spread over the fairy cakes and decorate.
If you prefer use Dark Chocolate Powder, in place of the Couverture, for chocolate icing.