Tropical Rum Old Fashioned with Brown Sugar and Lime

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A rich and smooth Old Fashioned variation featuring aged rum sweetened with brown sugar and brightened with fresh lime zest. This cocktails & beverages-inspired cocktails & drinks ready in about 5 minutes brings together Aged dark rum, Brown sugar syrup (1:1 sugar to water), dashes Angostura bitters for a refreshing, crowd-pleasing drink — a bright, easy pour for parties, gatherings, or any warm-weather afternoon when you want something festive without alcohol-only options. Each serving lands at about 190 calories and feeds 1, so it works for entertaining, brunch, or a non-alcoholic option at the bar cart. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 5 min Serves 1 Cocktails & Beverages cuisine 190 cal/serving
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Ingredients

Instructions

  1. Step 1: In a mixing glass, combine 2 oz aged dark rum, 1/2 oz brown sugar syrup, and 3 dashes of Angostura bitters.
  2. Step 2: Fill the mixing glass with large ice cubes and stir gently with a bar spoon for 30 seconds to chill and dilute slightly.
  3. Step 3: Place 1 large clear ice cube into a rocks glass.
  4. Step 4: Strain the stirred mixture over the ice cube.
  5. Step 5: Express the oils of 1 strip of fresh lime zest over the surface, rub it around the rim, and discard.
  6. Step 6: Express the oils of 1 orange peel strip over the drink and rest it on the rim as garnish.

Equipment for this recipe

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Frequently asked questions

How long does Tropical Rum Old Fashioned with Brown Sugar and Lime take to make?

Total time is about 5 minutes (5 min prep + 0 min cook). Most home bartenders find this fits a single afternoon; scale up the batch for parties or pitchers.

How do I store leftover Tropical Rum Old Fashioned with Brown Sugar and Lime?

Refrigerate any leftover tropical rum old fashioned with brown sugar and lime in a sealed pitcher or jar for up to 3–4 days. Do not reheat — drinks are served chilled. If the recipe uses sparkling water or fresh herbs, hold those back and add fresh just before pouring so the drink stays bright and fizzy.

Can I substitute ingredients in Tropical Rum Old Fashioned with Brown Sugar and Lime?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Tropical Rum Old Fashioned with Brown Sugar and Lime for a different number of people?

The recipe is written for 1 servings. Multiply each ingredient by (your serving target / 1). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Tropical Rum Old Fashioned with Brown Sugar and Lime?

Cocktails & Beverages cocktails & drinks like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.