The Vodka Tonic is similar in ingredients and preparation to the Gin & Tonic, as it is a simple drink; however, with this drink it is almost flavorless except for the lime. You can change this up though by using a flavored vodka. The key to a good Vodka Tonic is quality vodka and a good tonic. Because this drink is naturally lacking in flavor; if you use a bitter tasting tonic, the cocktail can be unpleasant to some. If you offer a variety of tonics at your establishment, be sure to ask your patrons if they have a preference for this refreshment.