Melt the chocolate over a water bath.

When the chocolate is melted, add the cornflakes to the chocolate.

Stir the mixture until all cornflakes are coated with chocolate.

Place drops of the cornflakes mixture onto a piece of baking paper, in appropriate sizes.

Let the chocolate set at room temperature before packing them in an airtight container.

Store in the fridge for as long as there are some left in the container. So probably a few days :-)