Lemon Hart is a brand of Demerara rum from Guyana. The Lemon Hart 151 is an overproof rum, it is bottled at 151 proof. Lemon Hart 151 is quite difficult to find. The Lemon Hart brand itself is distributed by Republic National Distributing, and was sold from Pernod Ricard to a Canadian company called Mosaiq . Republic does not currently stock 151, but carries their 80 proof rum.