Create an ice storm by simply lling the glass with water and placing the silicone mould inside, top up with water if needed. Pop in the freezer and wait. When frozen gently remove the silicone mould leaving a perfect tornado shape within a block of ice inside the glass. Fill the vortex with your favourite tipple and you will be assured of an ice cold drink for hours which looks stunning. Also, the silicone mould doubles up as an ice cube maker.