Captain Morgan BBQ Sauce Recipe: Rum-Infused Smoky Sweetness

This rum-infused sauce brings smoky depth and caramelized sweetness to any dish you grill or smoke. I developed it to add a little pirate’s kick to my competition ribs.

With just 10 minutes of simmering, it thickens into a glossy glaze that clings beautifully to meat. Store it in an airtight jar for up to two weeks.

Ingredients for Captain Morgan Bbq Sauce

Ten ingredients transform into bold, boozy barbecue magic in minutes.

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The rum is the soul here. Captain Morgan Original Spiced gives that signature pirate kick, but any dark rum works—just avoid anything too sweet. Trader Joe’s has a solid spiced option if you’re not near a liquor store. For the ketchup, Heinz or Hunt’s are reliable, but I’ve had great results with organic brands too. Molasses adds depth—Grandma’s is my go-to for consistency.

No spiced rum? Dark rum plus a pinch of cinnamon and vanilla gets you close. Out of molasses? Honey or maple syrup works in a pinch (though the flavor shifts slightly). If you’re avoiding gluten, Annie’s or Primal Kitchen make gluten-free ketchup. Smoked paprika is non-negotiable for that authentic BBQ flavor—don’t skip it. The brown sugar can be light or dark, but dark adds more caramel notes.

This keeps beautifully in an airtight jar. Stays fresh for 2 weeks in the fridge, or 3 months in the freezer. If it thickens too much after chilling, just warm it gently with a splash of water. Perfect for basting ribs, dabbing on burgers, or stirring into baked beans.

Step-by-Step Instructions for Rum-Infused BBQ Sauce

Here’s the method. Straightforward, tested, works every time.

Step 1: Combine the Wet Base Ingredients

In a medium saucepan, whisk together the 1.5 cups Ketchup, 0.25 cup Apple Cider Vinegar, and 0.25 cup Molasses. I like to start with these three because they form the foundation of the sauce’s sweet-tangy balance.

Place the saucepan over medium heat and stir occasionally as the mixture begins to warm. You’ll notice the molasses starts to thin out as it heats—that’s your signal that the ingredients are integrating properly.

Step 2: Incorporate the Sweeteners and Spices

Add the 0.5 cup Brown Sugar, 2 tbsp Worcestershire Sauce, and 1 tbsp Dijon Mustard. Stir well until the brown sugar is completely dissolved. This usually takes 2-3 minutes of constant stirring—don’t rush it.

Next, sprinkle in the 1 tsp Smoked Paprika, 1 tsp Garlic Powder, and 1 tsp Onion Powder. These dry ingredients need to be fully incorporated to prevent clumping. The mixture should now have a deep, rich color and a complex aroma.

Step 3: Add the Rum and Simmer

Carefully pour in the 0.5 cup Captain Morgan Original Spiced Rum. Stir to combine, then bring the mixture to a gentle boil. Here’s the thing—you want to cook off the alcohol while retaining the rum’s flavor, so maintain a steady simmer for 5 minutes.

After the initial boil, reduce the heat to low and let the sauce simmer for 15-20 minutes. You’re looking for it to thicken enough to coat the back of a spoon. Stir occasionally to prevent sticking, especially as it reduces.

Step 4: Adjust and Cool

Remove the saucepan from heat and let the sauce cool for 10 minutes. It will thicken further as it cools. I always taste at this point—if it needs more tang, a splash of vinegar does the trick; if it’s too sharp, a pinch of brown sugar balances it.

Once cooled, transfer to an airtight container. The sauce will keep in the refrigerator for up to 2 weeks. For the best flavor, I recommend letting it sit for at least 24 hours before using to allow the flavors to meld completely.

Best Sauces and Condiments for These Flavors

Classic Pairings

This sauce shines on slow-smoked ribs—brush it on during the last 30 minutes of cooking for a sticky, caramelized finish. I also love it with pulled pork sandwiches, where the rum notes cut through the richness of the meat. 🔥

Unexpected Uses

Try it as a glaze for grilled chicken wings or tossed with roasted vegetables like carrots and Brussels sprouts. The molasses and rum add depth to baked beans too—stir in ½ cup before baking.

Dipping Sauce

Thin it slightly with 1 tbsp apple cider vinegar for a perfect dipping sauce for fried chicken tenders or onion rings. The tang balances the sweetness beautifully.

Cocktail Twist

Use 1 oz in a BBQ Old Fashioned—mix with bourbon, a dash of bitters, and a brown sugar cube. The smoky-sweet profile elevates the drink to new heights. 💡

Breakfast Surprise

Drizzle over scrambled eggs or biscuits and gravy for a bold morning kick. A little goes a long way—start with 1 tsp and adjust to taste.

Chef’s Tip

For a spicier version, add ½ tsp cayenne or a dash of hot sauce. This sauce is versatile—don’t be afraid to experiment with it!