White Port and Tonic Browse more: Recipes Ingredients 3 oz. (75 ml) white portTonic waterGarnish: Slice or wedge of lemon, sprig of rosemary Steps Pour the white port into a tall glass over ice. Top up with tonic water, to taste, and garnish with the lemon and rosemary. Previous recipe: White Lady Next recipe: White Russian Cocktail (Vodka Drink With Kahlúa)