A Great Secret cocktail is a classic drink made with dry gin, Kina Lillet, a wine and citrus liqueur from France made popular by James Bond in Ian Fleming's "Casino Royale" and angostura bitters. The Great Secret cocktail is similar to a martini, and fans of dry gin martinis should appreciate the drink. This recipe makes one great secret cocktail, served straight up in a chilled martini glass with a twisted orange peel for garnish and additional flavor.