Bacardi 151 is an over-proof rum. The 151-proof liquor has an alcohol content of 75.5%, compared to the usual 35%–40%. Bacardi's 151-proof rum has been available in the US since at least 1981.
Due to its high proof, Bacardi 151 is typically used in very sweet drinks, such as a Hurricane, where a stronger flavored rum helps to counterbalance the sweetness of the drink. As is the case with all distilled spirits, Bacardi 151 is flammable. However, Bacardi 151 has multiple warnings on the label of the bottle stating that it should not be ignited or exposed to an open flame.
As an extra precaution, Bacardi 151, as shipped by Bacardi, is equipped with a stainless steel flame arrester crimped onto to the neck of the bottle to prevent the rum from igniting, in case a consumer or bartender ignores the warnings and applies the rum to a source of ignition (e.g. a flaming pan or dish, a flambe). Despite the warnings against ignition and the flame arrester incidents have been alleged where consumers claim to have been burned by bartenders who ignore the warnings and remove the flame arrestor using a tool strong enough to pry the stainless steel flame arrester from the bottle, and expose the bottle to an open flame.
Bacardi 151 is an essential component of a mixed drink called a Caribou Lou, consisting of 151 rum, Malibu Rum, and pineapple juice.
Bacardi 151 is also used to make a "Hurricane" drink. This mixed beverage consists of 1/2 oz of 151 rum, 1/2 oz of Malibu Rum, and 1/2 oz of Myers Rum. The mixed drink is then filled with equal parts of orange juice and pineapple juice, then topped with a small amount of Grenadine. Hurricanes can be garnished with a cherry.
In Germany, Bacardi 151 is frequently used to prepare Feuerzangenbowle, a traditional German alcoholic drink.
Bacardi 151 is used in the official Harry Potter shot, where the Bacardi is lit on fire and cinnamon is thrown onto the shot. This causes a small explosion, similar to the spell Expelliarmus.