Chill the Cocktail Glass by filling with Ice and topping up with tap water. While the glass is chilling, take a Lime and cut out a circular piece from the middle. Carefully peel off the Peel from the flesh. This should create a large ring of lime peel. Cut the peel to length and then lay the length of peel onto the work surface. Using the back of the knife, slowly run the peel over the knife to create the twist. You're now ready to make the cocktail.