Not all rum distilleries dump a bunch of additives into their spirit. In fact, Foursquare Rum Distillery in Barbados doesn't add any color, sugar, or additives to their rum. One of the standouts in their lineup is the Criterion Rum, a single blend of distillates from traditional twin column Coffey and artisanal pot stills. It's matured in a tropical climate for three years in ex-bourbon barrels before being transferred to ex-Madiera wine barrels for seven more years. It's bottled at 112 proof, and only 2,000 bottles were available at release time.