If you are a fan of Dark and Stormy's, might I suggest something darker and stormier? I present cW's interpretation, The Thunderhead. Also, don't forget to add the lime juice to your dark and stormies people. It would be horrible without it. Also, also there are many lesser known and really special rums from all over the world that are worth attempting to get your hands on for this tasting. I know I will. Good call on Rum, this will be fun. My wife's favorite cocktail:
Shake on ice and serve up. 1.5 oz -Dark Rum
.5 oz Cointreu
.5 oz Simple Syrup
.75 oz Lemon Juice
5 muddled Raspberries
I know that cW uses a juicer. It's potent stuff, use it sparingly.
Without a centrifugal juicer, the labor involved is outrageous. Crushing the root in a handpress has been done, but I really don't recommend. Second best option might be to grate with a superfine grater (microplane, probably), then strain through cheesecloth (though the juicer I use leaves in some of the pulp, and I don't really know if it would be better with or without). Still not a walk in the park, but as thenewgreen points out, you really don't need much. I recommend no more than 1 Tbsp. per drink, but you might want to start with even less.