I have become very partial to about 1.25oz Hamilton 86proof Demerara Rum, .5oz Hamilton Pimento Dram mixed in a large glass then filled with FRESHLY squeezed orange juice.
Beachbum Berry's Ancient Mariner is another of my favorites. I'll let you google that and discover more of Jeff's recipes for yourself. Or you can find the recipe on the back label of Hamilton Pimento Dram. To find Hamilton Pimento Dram in your state scroll down and click on your state on this map.