Blue Manatee Literacy Project and Bookstore in Cincinnati, Ohio, is celebrating National Martini Day, which is tomorrow, by offering its own signature cocktail called a Blue Manatini, Local12 reported. The store will have a tasting for the cocktail, which was created by Molly Wellmann, co-owner of several local bars, an award-winning bartender and mixologist, and author of Handcrafted Cocktails: The Mixologist's Guide to Classic Drinks for Morning, Noon & Night (Betterway Home).