Three cheers for the classic long drink: the Collins! One of my favorites, especially for lazy weekend afternoons. Here are two straightforward riffs on the basic recipe:
San Domingo Collins
2 oz gold rum (I used an El Dorado 5 Year Demerara, but Barbados 5 Year would be even better)
1 oz pineapple syrup
Juice of 1/2 lime
Pour into a tall glass filled with ice and stir generously. Fill with soda water, give another good stir, and sip.
2 oz London Dry gin (Boodles, of course)
1 oz Dubonnet Rouge
1 dash rich simple syrup
Juice of 1/2 lemon
Same procedure as the previous recipe.
Yes, the second is named after Jean-Luc, hence revealing my nerd heritage. As a kid, I used to love ST:TNG; as an adult, I've found it wonderful that Patrick Steward (as stalwart an English actor as could be) played a Frenchman for seven seasons.