Shake til frosted with plenty of fresh ice, then dump unstrained into a chilled rocks glass. Optionally, express and discard a lemon peel. Add two or three more drops of Jamaican #1 bitters for aromatics.
A dark and spicy sour with glints of tropical fruit, balanced to a little shy of Tiki sweetness. For a stronger, drier, less molasses-intensive drink, substitute half (or more) of the Black Strap with Lemon Hart 151.
Falernum syrup: make Rick from Kaiser Penguin's rich falernum (here: http://www.kaiserpenguin.com/remixed-astro-aku-aku/ ), but add 1T of medium-roast coffee beans and .5T of pecans and toast them with the other spices. Any homemade should be a fine substitution, as should commercial syrups (e.g. B. G. Reynolds). If using Velvet Falernum, substitute half with allspice dram.