NB. Above ingredients/quantities are sufficient to make 4 cocktails. Scoop out all the flesh of half a fresh watermelon and place in a blender. Add all the other ingredients and blend together well. Strain (to remove watermelon pips) into 4 highball glasses filled with crushed or cubed ice.

For extra spice in your Cranberry Surprise cocktail – use a spiced rum such as Sailor Jerry instead of the white rum. To make a big impression when making this cocktail at a party – why not serve it in the remaining half of the watermelon with straws for everyone to share?

Add a slice of watermelon to the edge of the glass