Not to be confused with the Tango from Harry Craddock's The Savoy Cocktail Book - which features gin, orange curacao and both sweet & dry vermouth.The Bellagio's version of the Tango is loaded with citrusy, grapefruit flavours softened with the sweet Passoa Passionfruit Liqueur. I recommend using a citrus-forward gin (Tanqueray 10 for example).