The Bardstown Sling: a bourbon, triple sec, cranberry and lime juice cocktail.
The Crimson Slippers Cocktail taught me that rum and Campari are an astonishing, and nearly perfect, combination. Just make sure it doesn't get too sweet.
The little-known Campden Cocktail — gin, Lillet and Grand Marnier — makes a pleasant, cold splash for a spring evening.
The Vermouth Trilby Cocktail: dry vermouth, Cointreau and bitters, with a whiskey float.