Some of the highest-calorie alcoholic beverages are the margarita, the long island iced tea and the piña colada. All of these drinks contain high amounts of both alcohol and sugar, both of which are the leading contributors of calories in alcoholic beverages.
Other high-calorie alcoholic beverages include mai tais, daiquiris, eggnog and flavored martinis. In general, anything containing a sweet liqueur, sweet flavored vodka or cream tends to be high calorie, as are drinks made with full-sugar mixers, such as tonic water, cola and orange juice. The long island iced tea is particularly dangerous because it contains high amounts of alcohol as well as both sweet and sour mix and cola.