The Casino, which appeared in Harry Craddock's 1930 Savoy Cocktail Book, falls into a category of cocktails called Daisies. Each of these drinks includes a spirit, citrus, and a flavored sweetener. (A Margarita, a Sidecar, and an Aviation are also Daisies; a Casino is essentially an Aviation with orange bitters instead of Crème de violette.) The original recipe called for Old Tom gin, which is sweeter than London Dry, but these measurements are adjusted for the more widely available London Dry style of gin. Note that in both this drink and the Aviation, you're using subtly almondy Maraschino liqueur, not the liquid from a jar of maraschino cherries. 

Ingredients

　　1 ½ oz. London Dry gin

　　½ oz. fresh lemon juice

　　½ oz. maraschino liqueur

　　2 dashes orange bitters

　　Garnish: Luxardo cherry

　　Add all ingredients to a cocktail shaker and shake until well chilled. Strain into a Nick and Nora glass and add cherry.