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All Spirits Rum Blackstrap Rum – Everything You Need To Know

Blackstrap Rum – Everything You Need To Know

Blackstrap Rum is a distinctive type of rum characterized by its deep, rich flavor and dark color, derived from blackstrap molasses, the thickest and most intense byproduct of refining sugarcane. Unlike lighter rums, which may use lighter grades of molasses or direct sugarcane juice, Blackstrap Rum embraces the robust, slightly bitter sweetness and complex aromatics of blackstrap molasses, resulting in a fuller-bodied spirit. This unique base gives it a flavor profile that stands out for its notes of molasses, caramel, and sometimes, a hint of smokiness, making it a favorite among connoisseurs for sipping neat, on the rocks, or as a bold base in sophisticated cocktails.

Cruzan Black Strap Rum

What is Blackstrap Rum?

Blackstrap Rum is crafted from the darkest form of molasses, known as blackstrap molasses, which is the final byproduct of the sugarcane refining process. Unlike its lighter counterparts, which might utilize first or second molasses or even fresh sugarcane juice, Blackstrap Rum is defined by this rich, intensely flavored molasses. This not only imparts a distinctive dark color but also a depth of flavor that is unmatched, blending notes of sweet caramel with a slightly bitter, smoky undertone.

Blackstrap Rum’s flavor profile is less sweet but more mineral-rich than lighter molasses, resulting in a rum that offers a complexity that can be an acquired taste for some. Connoisseurs often note the presence of rich molasses, vanilla, and caramel, underpinned by a unique, earthy bitterness that adds an intriguing layer to its profile. This complexity makes Blackstrap Rum a versatile spirit, equally enjoyable when sipped neat, as part of a sophisticated cocktail, or even in culinary creations that call for a bold, aromatic spirit.

Whether you’re a seasoned rum lover or a curious newcomer, Blackstrap Rum invites you to explore the darker, more complex side of rum, promising an experience that’s as rewarding as it is flavorful.

History of Blackstrap Rum

The history of blackstrap rum, like that of many spirits, is intertwined with the broader history of rum production and consumption, which spans several centuries and various cultures. While specific references to “blackstrap” rum as a distinct category may not be as well-documented as the history of rum in general, the use of blackstrap molasses in rum production has roots in the early sugar industry.

Early Sugar Industry and Molasses

Sugar Production

The production of sugar from sugarcane was established in the Caribbean and South America during the 16th and 17th centuries by European colonizers. The process involves boiling sugarcane juice to crystallize the sugar, with molasses being a byproduct of this process.

Molasses to Rum

Molasses, particularly the darker and more concentrated blackstrap molasses produced in the final stage of sugar refining, were fermented and distilled into rum. This was initially a way to use up a byproduct that was otherwise considered waste.

Rum’s Role in Colonial Trade

Triangular Trade

Rum became a significant commodity in the triangular trade between Europe, Africa, and the Americas. European goods were traded for enslaved Africans, who were then transported to the Americas and sold. The profits from slave sales were often used to purchase molasses or rum, which were then sold in Europe.

Economic Importance

In colonial America and the Caribbean, rum production was an important economic activity. Blackstrap molasses, being less desirable for consumption than lighter molasses, found a valuable use in the burgeoning rum industry.

Industrialization and Changes in Rum Production


As sugar refining and rum production methods evolved, so did the use of blackstrap molasses. The 19th and 20th centuries saw innovations in distillation and aging that could mitigate the harsher flavors of blackstrap molasses, making blackstrap rum more palatable and complex.


The rum industry diversified over time, with producers experimenting with different types of molasses, yeasts, and aging processes to create a wide range of rum styles, including those specifically labeled as “blackstrap.”

Modern Perception and Use

Craft and Specialty Spirits

In recent years, there has been a resurgence of interest in craft and specialty spirits, including blackstrap rum. Distillers are exploring the unique flavors that blackstrap molasses can bring to rum, often marketing these products as premium or artisanal offerings.

Cocktail Culture

The modern cocktail culture has embraced blackstrap rum for its robust flavor, using it in both traditional and innovative drinks that highlight its unique characteristics.

While blackstrap rum may not have a separate historical narrative from the broader history of rum, its development, and continued production are a testament to the spirit’s adaptability and the enduring appeal of its rich flavors. The use of blackstrap molasses in rum production is a legacy of the early sugar industry, and today’s blackstrap rums continue to celebrate this heritage with their distinctive taste profiles.

Did You Know?

  • Blackstrap molasses, the key ingredient in Blackstrap Rum, is surprisingly nutritious, packed with vitamins and minerals like iron, calcium, magnesium, vitamin B6, and selenium, making the rum unique among spirits for its trace nutritional content.
  • In the past, sailors were sometimes given rum as a part of their daily rations. Blackstrap Rum, with its rich mineral content, was believed to offer health benefits, including combating scurvy, although citrus fruits were more effective for this purpose.
  • The production of Blackstrap Rum can be seen as an example of environmental sustainability, as it utilizes blackstrap molasses. This byproduct might otherwise be wasted, turning it into a premium product.
  • The aging process of Blackstrap Rum varies significantly among distilleries, with some opting for new oak barrels and others preferring barrels that previously held bourbon, sherry, or other spirits, contributing to the rum’s diverse flavor profiles.
  • Due to the specific taste and the specialized process required to make Blackstrap Rum, it is often produced in smaller batches by artisan distilleries, making it a less common find than other types of rum.
  • The flavor of Blackstrap Rum is more complex and robust than that of lighter rums, with tasting notes that can include molasses, licorice, dark chocolate, and a range of spices, offering a deeper sipping experience.
  • Despite its bold flavor, Blackstrap Rum is surprisingly versatile in cocktails, capable of adding depth and complexity to both classic and innovative drinks, from a Rum Old Fashioned to a Blackstrap Rum Mojito.
  • Beyond its role in beverages, Blackstrap Rum is also valued in culinary contexts, particularly in baking and dessert making, where its rich molasses flavor can enhance cakes, puddings, and sauces.

How Adaptable is Blackstrap Rum?

Blackstrap rum is highly adaptable, both in terms of its production methods and its application in culinary and mixology contexts. This adaptability stems from its robust flavor profile, which can stand up to a wide range of mixers and ingredients. Here’s a look at the various ways blackstrap rum proves its versatility:

In Cocktails

Versatility in Mixology

Blackstrap rum’s rich, deep flavors make it a unique ingredient for cocktails. Its strong molasses and sometimes smoky notes can add complexity to simple drinks or balance out sweeter, fruitier components.

Classic and Innovative Cocktails

It can be used in classic rum cocktails as a substitute to add a darker, more intense flavor profile. Additionally, innovative mixologists often use blackstrap rum to create new cocktails that highlight its unique characteristics.

Culinary Uses

Beyond the bar, blackstrap rum can be a fascinating addition to culinary recipes. Its bold flavors work well in sauces, glazes, and marinades, adding depth to both sweet and savory dishes. In baking, it can enhance the flavors of cakes, puddings, and other desserts.

Flavor Pairings

Blackstrap rum pairs well with a variety of flavors, from the sweetness of tropical fruits to the warmth of spices like cinnamon, nutmeg, and clove. Its richness can also complement the bitterness of coffee or chocolate, making it versatile in dessert pairings.

Seasonal Adaptability

While its warm, rich notes might seem suited to cooler weather, blackstrap rum is also enjoyable in summer cocktails, especially those that feature citrus or tropical fruit juices, making it a year-round spirit.

Production Flexibility

Aging Potential

The depth of flavor in blackstrap rum allows it to benefit from aging, with the potential to develop even more complexity over time. Distillers can experiment with different types of barrels (such as bourbon, sherry, or wine barrels) to impart additional flavors and nuances to the rum.

Craft Distillery Innovations

Small-batch producers can explore the limits of blackstrap rum by experimenting with fermentation times, distillation methods, and aging processes to create unique expressions of this bold spirit.

Blackstrap rum’s adaptability lies in its ability to infuse a distinctive flavor into a wide array of drinks and dishes, its pairing potential with a broad spectrum of tastes, and the opportunities it presents for creative distillation and aging techniques. Whether used in traditional settings or innovative culinary experiments, blackstrap rum demonstrates a remarkable capacity to elevate and transform, making it a cherished ingredient among chefs, mixologists, and rum enthusiasts alike.

Blackstrap Rum Regulations

The regulations governing the production and labeling of blackstrap rum are not as specific as those for certain other spirits like bourbon or Scotch whisky, which have very strict legal definitions. However, blackstrap rum is subject to the general regulations that apply to rum production, which vary by country. Here’s an overview of the broader regulatory framework that would encompass blackstrap rum:

United States

In the U.S., the Alcohol and Tobacco Tax and Trade Bureau (TTB) sets forth the regulations for rum:


Rum must be distilled from the fermented juice of sugar cane, sugar cane syrup, sugar cane molasses, or other sugarcane by-products.


It must be distilled at less than 95% alcohol by volume (190 proof) to ensure that the final product retains the flavor and characteristics of rum.


There are no specific aging requirements for rum in general; however, if a rum is labeled as “aged,” the TTB requires that it must be aged in oak barrels for at least one year. The term “blackstrap” itself doesn’t imply any specific aging process, so blackstrap rums can vary widely in their aging.

European Union

The EU has its own set of regulations for rum, broadly similar to those in the U.S.:


Rum in the EU must be produced from sugarcane products in a specific manner that preserves the traditional characteristics of rum.

Geographical Indications

Some countries within the EU have geographical indications for rum, which come with additional specific regulations concerning production methods and origins.

Geographic Indications

Some countries and regions have specific indications that protect the style and production methods of rum produced in those areas. For example:

Martinique’s AOC for Rhum Agricole

Specifies detailed regulations around the production of rhum agricole, including the types of sugarcane used and the distillation process. While this is more specific to rhum agricole than to blackstrap rum, it’s an example of how specific regulations can get.

Labeling and Marketing

Labeling Regulations

Depending on the market, there may be specific labeling regulations that apply to rum, including blackstrap rum. These can dictate what information must be included on the label, such as alcohol content, country of origin, and whether the rum is flavored.


If a blackstrap rum is flavored with additional ingredients, it may be subject to further regulations regarding flavoring and additives.

While there are no regulations that specifically address “blackstrap” rum as a distinct category, it falls under the broader legal definitions and regulations applicable to rum. These regulations focus on the base ingredients, distillation process, and, in some cases, aging requirements. The specific character of blackstrap rum comes from the use of blackstrap molasses as the primary fermentable sugar. This choice is more about style and flavor profile than about regulatory classification. Distillers producing blackstrap rum must navigate the general legal framework for rum while crafting their unique expressions of this richly flavored spirit.

What are the Ingredients of Blackstrap Rum?

The primary ingredient in blackstrap rum is blackstrap molasses, which is a dark, dense byproduct of the final stage of the sugar refining process. When sugarcane juice is boiled and crystallized to make sugar, molasses is produced as a byproduct. Blackstrap molasses is obtained from the third boiling of the sugarcane juice, making it the darkest and most concentrated form, with a robust, bittersweet flavor. Here’s a breakdown of the main components and ingredients involved in making blackstrap rum:

  • Blackstrap molasses
  • Water
  • Yeast
  • Oak barrels (for aging)
  • Optional Ingredients
    • Spices: Some distillers might add spices or other flavoring agents to their Blackstrap Rum, creating spiced variants that offer additional layers of taste. These ingredients are not standard for all Blackstrap Rums but can include cinnamon, nutmeg, vanilla, or citrus peels tailored to enhance the rum’s natural flavor profile.
    • Caramel Coloring

What are the Tools Used to Make Blackstrap Rum? 

The production of blackstrap rum involves a series of steps, each requiring specific tools or equipment. From the initial fermentation process to distillation and aging, here is an overview of the essential tools used in making blackstrap rum:

  • Fermentation Tanks
  • Yeast Cultivation Equipment
  • Distillation Apparatus
  • Hydrometers and Thermometers
  • Aging Barrels
  • Blending Equipment
  • Bottling Line
  • Quality Control Instruments

How Is Blackstrap Rum Made?

The production of Blackstrap Rum is a detailed process that transforms the dense, mineral-rich blackstrap molasses into a dark, flavorful spirit. Here’s a simplified overview steps of the process:

Prepare the Wash

  • After selecting the ingredients and equipment, mix molasses and warm water in the fermentation vessel. The typical ratio is about 1 part molasses to 4 parts water, but this can vary based on personal preference and the specific gravity you’re aiming for.
  • Add yeast nutrients to help the yeast thrive.
  • Cool the mixture to the yeast’s optimal fermentation temperature, usually around 70-75°F (21-24°C).
  • Add the yeast to the mixture, following the manufacturer’s recommendations for quantity.


  • Seal the fermentation vessel with an airlock to allow gases to escape while preventing outside air from entering.
  • Allow the mixture to ferment for about 1 to 3 weeks. The fermentation time can vary based on temperature, yeast strain, and the desired flavor profile. The fermentation is complete when the airlock stops bubbling, and the specific gravity readings are stable over a couple of days.


  • Transfer the fermented wash to the pot still. Be sure to leave behind the sediment (lees) to avoid off-flavors during distillation.
  • Slowly heat the wash. As it heats, alcohol and other compounds will vaporize and then condense back into liquid form as they pass through the still’s cooling system.
  • Collect the distillate in fractions. The first fraction (foreshots) contains undesirable compounds and should be discarded. The next fraction (heads) also contains some unwanted elements and can be set aside or redistilled. The heart is the desired portion of the distillate, featuring the best flavor. Finally, the tails contain heavier alcohols and can be redistilled or discarded based on preference.

Aging (Optional)

  • Blackstrap rum can be aged in barrels to develop depth and complexity of flavor. The type of barrel (new, used, charred, etc.) will influence the final taste.
  • Aging time can vary from a few months to several years, depending on the desired outcome.


  • After distillation (and aging, if applicable), dilute the rum to the desired strength with water.
  • Bottle the rum for storage or consumption.

Quality Control

Throughout the production process, especially before bottling, the rum is tasted and tested for quality assurance, ensuring that it meets the desired standards for flavor, aroma, and clarity.

This meticulous process, from the dense blackstrap molasses to the final spirit, creates a rum with a unique depth of flavor, embodying the essence of its base ingredient. Blackstrap Rum stands out for its rich, bold character, making it a favorite among enthusiasts and a distinctive choice for cocktails.

How is Blackstrap Rum Different from Others?

Blackstrap Rum is distinguished from other rum varieties primarily by its base ingredient, production process, and flavor profile. Here’s a detailed comparison to highlight the differences:

Base Ingredient

Blackstrap Molasses

Blackstrap Rum is made from blackstrap molasses, the darkest and most intense byproduct of the sugar refining process. This molasses is obtained after the third boiling of sugarcane juice, resulting in a product that’s rich in minerals but less sweet and more bitter than the lighter molasses used in other rums.

Other Rums

Lighter rums might be produced from lighter grades of molasses or directly from sugarcane juice (as in the case of Rhum Agricole). The choice of base ingredient significantly influences the final flavor of the rum.

Production Process

Fermentation and Distillation

The process of making Blackstrap Rum can be similar to other rums in terms of fermentation and distillation. However, the unique properties of blackstrap molasses require careful handling to balance the robust flavors and potential bitterness.


While aging is a common practice across many types of rum, the intense flavor of Blackstrap Rum can benefit significantly from this process, often mellowing its harsher notes and adding complexity through the interaction with oak barrels.

Flavor Profile

Rich and Robust

Blackstrap Rum is known for its full-bodied, rich, and robust flavor profile. It typically features strong notes of molasses, with undercurrents of caramel, vanilla, and sometimes a smoky or slightly bitter finish, owing to the concentrated flavors of the blackstrap molasses.

Versatility in Cocktails

Its distinctive flavor makes Blackstrap Rum a popular choice for adding depth to cocktails. It offers a bold contrast to the lighter, more versatile profiles of white or gold rums.

Color and Texture

Darker and Thicker

The high concentration of molasses gives Blackstrap Rum a darker color and a thicker texture compared to lighter rums. This visual and tactile difference is immediately noticeable and contributes to the rum’s appeal in certain drinks and culinary uses.

Nutritional Content


Due to its base of blackstrap molasses, Blackstrap Rum retains a higher mineral content, including calcium, magnesium, and iron. While not consumed for nutritional benefits, it’s an interesting distinction from other rums.

Types of Blackstrap Rum

Blackstrap Rum can further vary based on factors such as aging, flavor additions, and production methods. These variations give rise to different types of Blackstrap Rum, each with unique characteristics:

Aged Blackstrap Rum

This type undergoes aging in oak barrels for a period that can range from a few months to several years. The aging process mellows the intense flavors of the blackstrap molasses, adding depth and complexity to the rum. Aged Blackstrap Rums can exhibit notes of vanilla, caramel, oak, and spices, depending on the duration and conditions of aging.

Unaged (White) Blackstrap Rum

While it might seem contradictory, there are clear or white rums made from blackstrap molasses. These rums are usually filtered after distillation to remove color. They offer a lighter option that retains the rich, molasses-based flavors without the dark color, making them more versatile for mixing in cocktails.

Spiced Blackstrap Rum

Spiced variants are infused with a blend of spices, herbs, and sometimes citrus peels, enhancing the natural flavors of the rum. Common additions include cinnamon, nutmeg, vanilla, and clove. This type offers a flavorful twist, making it popular in cocktails that benefit from its rich, spiced profile.

Overproof Blackstrap Rum

Overproof rums are bottled at a higher alcohol content than the standard 40% ABV (Alcohol By Volume). In the case of Blackstrap Rum, an overproof version would pack a stronger punch while retaining the deep, molasses-rich flavor, making it a potent choice for certain cocktails or culinary applications where a higher alcohol content is desired.

Artisanal or Craft Blackstrap Rum

Produced by small-scale distilleries, these rums emphasize traditional or innovative production methods, often using locally sourced molasses and unique fermentation or distillation processes. They may offer a distinctive take on Blackstrap Rum, reflecting the terroir and the distiller’s craftsmanship.

Flavored Blackstrap Rum

Similar to spiced rums but focusing more on singular flavor additions like coconut, mango, or coffee. These rums combine the deep flavors of blackstrap molasses with these added essences, creating unique profiles suited for specific cocktails or sipping experiences.

Single Barrel Blackstrap Rum

This refers to rum that has been aged and bottled from a single barrel, offering a unique taste profile that reflects the specific conditions and characteristics of that barrel. Single barrel rums can provide a distinct, often more nuanced expression of blackstrap rum.

Cask Finish Blackstrap Rum

Some blackstrap rums are finished in barrels that previously held other spirits or wines, such as bourbon, sherry, or port. This finishing process can add additional layers of flavor, complexity, and sweetness, contrasting or complementing the rum’s inherent richness.

Buy Blackstrap Rum Online

Many high-quality brands are producing excellent Blackstrap Rum. While “best” can be somewhat subjective depending on personal taste, here are a few that are widely recognized for their quality: 

Cruzan Black Strap Rum

Based in St. Croix, U.S. Virgin Islands, Cruzan Rum Distillery is known for a wide range of rum varieties, including their Black Strap Rum. This particular rum is noted for its thick, velvety texture and deep, molasses-rich flavor, with a hint of sweetness and a smooth finish, making it a favorite for both sipping and mixing in cocktails.

Cruzan Black Strap Rum

Goslings Black Seal Rum

Although not labeled explicitly as “Blackstrap,” Goslings Black Seal Rum from Bermuda is often associated with the characteristics of Blackstrap Rum due to its rich, full-bodied flavor derived from a blend of pot and continuous still rums. It’s a key ingredient in the Dark ‘n Stormy cocktail, showcasing its versatility and depth.

Goslings Black Seal Rum

Plantation Original Dark Rum

While Plantation offers a range of aged and specialty rums, their Original Dark Rum is crafted with a blend of rums from Trinidad and Tobago, aged in bourbon barrels and finished in cognac casks for a rich, complex flavor. It’s known for its bold molasses notes, balanced by a touch of sweetness and spice, aligning with the qualities sought after in Blackstrap Rums.

Plantation Original Dark Rum

Skipper Demerara Rum

Skipper is a rich, dark Demerara rum from Guyana, known for its thick, treacly molasses flavor that aligns closely with the profile of Blackstrap Rum. It’s aged for at least three years, giving it a smooth, complex profile that includes notes of dark chocolate, caramel, and spices.

Kraken Black Spiced Rum

The Kraken is a black spiced rum with a strong, rich flavor profile that includes notes of molasses, cinnamon, and ginger. While not a traditional Blackstrap Rum, its intense color and flavor profile, derived from a blend of over 11 spices, make it akin to the deep, robust qualities found in Blackstrap Rums.

The Kraken Black Spiced Rum 94 Proof

Other brand names producing Blackstrap Rum:

  • Coruba
  • Blackwell
  • El Dorado
  • R.L. Seale
  • Pusser’s
  • Myer’s
  • Zacapa
  • Diplomatico
  • Appleton Estate
  • Mount Gay
  • Bacardi (specific dark rum expressions)
  • Don Q
  • Zaya
  • Angostura

Blackstrap Rum Recipes

Blackstrap Rum lends itself to a variety of cocktail recipes, from classic to contemporary. Here are a few delightful recipe variations that highlight the versatility and depth of Blackstrap Rum:

Blackstrap Molasses Old Fashioned


  • 2 oz Blackstrap Rum
  • 1/4 oz Simple Syrup
  • 2 dashes Angostura Bitters
  • Orange peel (for garnish)


  • Combine Blackstrap Rum, simple syrup, and Angostura bitters in a mixing glass with ice.
  • Stir well until the mixture is well chilled.
  • Strain into a rocks glass over a large ice cube.
  • Express the orange peel over the drink and drop it in as garnish.

Dark & Stormy Blackstrap


  • 2 oz Blackstrap Rum
  • 4 oz Ginger Beer
  • 1/2 oz Fresh Lime Juice
  • Lime wedge (for garnish)


  • Fill a highball glass with ice cubes.
  • Add fresh lime juice and top with ginger beer.
  • Gently float Blackstrap Rum on top by pouring it over the back of a spoon.
  • Garnish with a lime wedge.

Blackstrap Rum Swizzle


  • 2 oz Blackstrap Rum
  • 1 oz Pineapple Juice
  • 1/2 oz Lime Juice
  • 1/2 oz Simple Syrup
  • Dash of Angostura Bitters
  • Mint sprig (for garnish)


  • In a Collins glass, add Blackstrap Rum, pineapple juice, lime juice, simple syrup, and a dash of Angostura bitters.
  • Fill the glass with crushed ice and swizzle until the outside of the glass frosts.
  • Top with more crushed ice and garnish with a mint sprig.

Blackstrap Espresso Martini


  • 1 1/2 oz Blackstrap Rum
  • 1 oz Espresso (freshly brewed and cooled)
  • 1/2 oz Coffee Liqueur
  • 1/4 oz Simple Syrup
  • Coffee beans (for garnish)


  • Add Blackstrap Rum, espresso, coffee liqueur, and simple syrup to a shaker filled with ice.
  • Shake vigorously until well-chilled.
  • Strain into a chilled martini glass.
  • Garnish with three coffee beans on top.

Blackstrap Rum Punch


  • 2 oz Blackstrap Rum
  • 1 oz Orange Juice
  • 1 oz Pineapple Juice
  • 1/2 oz Lime Juice
  • 1/2 oz Grenadine
  • Pineapple slice and cherry (for garnish)


  • In a shaker filled with ice, combine Blackstrap Rum, orange juice, pineapple juice, lime juice, and grenadine.
  • Shake well and strain into an ice-filled highball glass.
  • Garnish with a pineapple slice and a cherry.

Each recipe showcases Blackstrap Rum’s unique ability to enhance cocktails with its deep, molasses-rich flavor, adding a layer of complexity and warmth to a wide range of drinks. Cheers!


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