The Tom Collins is a Collins cocktail made from gin, lemon juice, sugar, and carbonated water. First memorialized in writing in 1876 by Jerry Thomas, "the father of American mixology", this "gin and sparkling lemonade" drink is typically served in a Collins glass over ice. A non-alcoholic "Collins mix" mixer is produced, enjoyed by some as a soft drink.

A cocktail is an alcoholic mixed drink or non alcoholic mixed drink. Most commonly, a cocktail is a combination of one or more spirits mixed with other ingredients, such as juices, flavored syrups, tonic water, shrubs, and bitters. Cocktails vary widely across regions of the world, and many websites publish both original recipes and their own interpretations of older and more famous cocktails.