Rum Eggnog

Name: Rum Eggnog Cocktail
Prep time: 5 min
Total time: 5 min
Yield: 4 servings
Ingredients: 1 Egg; 1 tsp Powdered Sugar; 2 oz Old Mr. Boston Imported Rum

Rum eggnog is a silky, boozy holiday cocktail combining fresh egg, powdered sugar, and rum into a quick-mixing single-serve drink. The key is whisking the egg thoroughly to create a creamy, frothy texture.

🏷️Equipment: collins glass

Total

5 min

Servings

4

Difficulty

Easy

Est. Cost

$10–$16

Recipe Source

View original recipe

From Mr. Boston Drinks · by Old Mr. Boston De Luxe Official Bartender's Guide

Ingredients

1 Egg
1 tsp Powdered Sugar
2 oz Old Mr. Boston Imported Rum

3 Ingredients

Delivery in as fast as one hour.^*

Powered by Instacart

Prices vary by store

^*Service fees apply. Instacart^® and the Instacart logo are registered trademarks of Maplebear Inc. d/b/a Instacart.

Instructions

1
Fill glass with milk.
2
Shake well with cracked ice and strain into 12 oz.
3
Tom Collins glass.
4
Grate nutmeg on top.

Was this recipe helpful?

Tips & Notes

Pro tips

Whisk the egg vigorously with powdered sugar first to emulsify and create a creamy base before adding rum.
Chill your glass and ingredients beforehand for a smoother, colder drink.
Use room-temperature or slightly chilled eggs for easier whisking and better texture.

Substitutions

Old Mr. Boston rum → spiced or dark rum (richer flavor, higher cost)
Powdered sugar → simple syrup or honey (easier to dissolve, slightly different sweetness)

Storage & make-ahead

Store covered in the refrigerator up to 24 hours; stir or shake before serving.

Common Questions

Is it safe to drink raw egg in eggnog?

Food safety depends on egg source and freshness. Use pasteurized eggs or pasteurized egg products if concerned about raw egg consumption.

Can I scale this recipe for a crowd?

Yes—multiply all ingredients by the number of servings needed. Mix in larger batches and stir or shake well before serving.

What type of rum works best?

Dark or spiced rum adds richer flavor, but light rum also works. Old Mr. Boston is a budget-friendly choice; upgrade to higher-proof aged rum for depth.