The Atomic cocktail is a champagne cocktail that was popularized by the Las Vegas Chamber of Commerce and local casinos in the 1950s.[1][2][3][4][5] During this period, Las Vegas was sometimes called the "Atomic City".[6]
The name has been used generically to refer to many similarly themed cocktails that were created around the same period, usually referencing atoms, nuclear fission, or rocket flights.[7]