The Aviation is a classic cocktail made with gin, maraschino liqueur, crème de violette, and lemon juice. Some recipes omit the crème de violette. It is served straight up, in a cocktail glass.
The Aviation can be considered a variation on the Gin sour, using maraschino as its sweetener. The Blue Moon cocktail is made with gin, lemon juice, and crème de violette or Creme Yvette, without maraschino. The Moonlight cocktail is made with gin, lime juice, Cointreau, and crème de violette.