Unknown Caller Dark Rum Old Fashioned

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A smooth, contemplative dark rum cocktail with warm spices and bitters, perfect for sipping while reflecting on mysterious calls. This cocktails-inspired quick meals ready in about 4 minutes pairs dark rum, demerara syrup, dashes Angostura bitters for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 calories and feeds 1, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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: 4 min Serves 1 Cocktails cuisine 180 cal/serving
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Ingredients

Instructions

  1. Step 1: Place one large clear ice cube into a rocks glass.
  2. Step 2: Pour 2 oz dark rum and 0.25 oz demerara syrup over the ice.
  3. Step 3: Add 3 dashes of Angostura bitters.
  4. Step 4: Stir gently with a bar spoon for 30 seconds to chill and slightly dilute.
  5. Step 5: Express the oils of a wide strip of orange peel over the glass surface by twisting it, then rim the glass and rest the peel inside as garnish.

Equipment for this recipe

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Frequently asked questions

How long does Unknown Caller Dark Rum Old Fashioned take to make?

Total time is about 4 minutes (4 min prep + 0 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Unknown Caller Dark Rum Old Fashioned?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep dark rum from drying out.

Can I substitute ingredients in Unknown Caller Dark Rum Old Fashioned?

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 Unknown Caller Dark Rum Old Fashioned 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 Unknown Caller Dark Rum Old Fashioned?

Cocktails quick meals 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.