Calico Jack® Mango Rum. As a well traveled pirate, Calico Jack always appreciated a little flavor in his life. Imported rum with natural flavors. 42 Proof. 1.75 Liters. Sailing the seven seas brings a flavor to itself. Now savor a little John "Calico Jack" Rackham's world. A taste of adventure surely awaits. Fill your own flag™. Visit www.calicojackrums.com.