Rum Old Fashioned (Bajan Style): Barbadian Rum and Demerara Cocktail

The Bajan Rum Old Fashioned keeps the classic formula of spirit, sugar, bitters, and dilution while putting aged Barbadian rum at the center. Demerara syrup reinforces the rum’s caramel and molasses notes, aromatic bitters add spice, and orange bitters sharpen the finish without covering the character of the base spirit.

A Classic Template With Barbadian Rum

The Old Fashioned developed from the early definition of a cocktail: spirit, sugar, water, and bitters. This Bajan-style variation replaces whiskey with rum from Barbados, a country with a long rum-making tradition. The swap preserves the drink’s restrained structure while introducing flavors of oak, tropical fruit, vanilla, caramel, and baking spice.

What You’ll Need

Ingredients

• Barbadian rum: Provides the aged, oak-driven base with rounded fruit, vanilla, and caramel notes.
• Demerara syrup: Adds rich sweetness with light molasses character.
• Angostura bitters: Supplies aromatic spice and balances the syrup.
• Orange bitters: Adds a dry citrus edge that brightens the rum.
• Orange peel: Contributes fresh citrus oils and aroma at the surface.

No Barbadian rum? Use another balanced aged rum with moderate oak and no added flavoring.

No demerara syrup? Brown sugar syrup provides a similar molasses note, while simple syrup gives a cleaner result.

No orange bitters? Use an additional dash of aromatic bitters and express a wider orange peel over the finished drink.

Equipment

• Mixing glass
• Jigger
• Bar spoon
• Julep or Hawthorne strainer
• Old Fashioned glass
• Large ice cube
• Citrus peeler

Rum Takes the Lead

This variation works because the supporting ingredients stay restrained. Demerara syrup complements the rum instead of turning the drink sugary, while two types of bitters add spice and citrus definition. Proper stirring softens the alcohol and integrates the flavors without diluting the aged rum’s character.

Substitutions & Variations

• Use Jamaican aged rum for a fruitier and more aromatic version.
• Choose a dry Spanish-style aged rum for a lighter, cleaner profile.
• Replace demerara syrup with maple syrup for a woodier sweetness.
• Add one dash of chocolate bitters for a darker dessert-like variation.
• Use grapefruit bitters instead of orange bitters for a sharper citrus finish.
• Split the base between Barbadian rum and overproof rum for greater intensity, keeping the total amount of spirit unchanged.
• Serve over a clear ice sphere for slower dilution and a polished presentation.

Helpful Tips

• Use a rum you enjoy drinking neat because the recipe offers little room to hide flaws.
• Chill the Old Fashioned glass before straining.
• Use dense, fresh ice in the mixing glass for controlled dilution.
• Stir rather than shake to maintain a clear, silky texture.
• Taste before straining and adjust the stirring time rather than adding water directly.
• Express the orange peel with the colored side facing the drink.
• Prepare demerara syrup with equal parts sugar and hot water for an easy home version.
• For batching, combine the rum, syrup, and bitters in advance. Chill and dilute each serving by stirring with ice.
• Pair with grilled pork, jerk chicken, aged cheese, roasted nuts, or dark chocolate.