The morning before you go shopping, place a couple of fresh cranberries into an ice cube tray, fill up with water and pop in the freezer.

That evening, pour the caster sugar on to a side plate, add a tiny drop of red food colouring and stir until the sugar turns red.

Dip your finger in water and run it around the rim of your glass. Dip the slightly damp rim into the red sugar to create a tinsel effect on the glass.

Pour the cranberry gin into the glass then top up with the tonic water.

Add one or two of the cranberry ice cubes and garnish with a wedge of lime.