Shake first four ingredients, strain into collins glass with cracked ice, top with cola. Garnish with lime wedge and serve with a straw.
Cane-sweetened cola is recommended.
The original Cuba Libre (simply Rum and Coke) first emerged around 1900 in Havana, Cuba. Dave Stolte reports that Paul Harrington created this spin on the simple classic by adding gin and Angostura bitters at the suggestion of a Venezuelan customer at his bar in California in 1995.
Dave Stolte's Home Bar Basics: http://www.homebarbasics.com/cuba-libre-preparado/