Add chocolate chips to a heat safe bowl.
In a small saucepan, heat cream until small bubbles start to form around the edge.
Pour the heated cream over the chocolate chips making sure to cover as much of the chocolate as possible. Allow to sit, without stirring, for 3-5 minutes then whisk until smooth.
Allow the ganache to cool to room temperature before using on the cake.
With a squirt bottle or small spoon, carefully drip the ganache over the edge of the cake. Repeat around the whole cake.