Blue Moon of Kentucky Mint Rum Cocktail

Prep: 5 min1 servingsmedium
Blue Moon of Kentucky Mint Rum Cocktail

Blue Moon of Kentucky is a refreshing rum cocktail that captures the elegance of a classic mint julep with a modern twist. This drink features Ruby Port Cask Finished Rum as its star ingredient, complemented by the cooling brightness of muddled mint and the subtle sweetness of simple syrup. What makes this version special is the use of aged, port-cask finished rum, which adds subtle oak and dried fruit notes that enhance the cocktail beyond typical rum drinks. The muddled mint releases essential oils that perfume each sip, while the ice chill mellows the rum's complexity. Perfect for warm evenings, summer gatherings, or anyone seeking a sophisticated yet approachable cocktail. This recipe appeals to rum enthusiasts and mint cocktail lovers alike. Serve it as an aperitif or digestif, and the crystal coupe glass presentation adds a touch of refined elegance that sets this apart from casual mixed drinks.

Ingredients

1 servings
  • 1 ½ oz Ruby Port Cask Finished Rum
    Standard aged rum1:1alcoholrum

    loses port and oak complexity

  • ½ oz Simple Syrup
    Honey syrup1:1sweetenerhoney

    adds floral notes, slightly thicker mouthfeel

  • 4 Mint Leaves, for muddling and garnish
    Basil leaves4 leavesherbfresh

    shifts profile toward peppery and savory

    Full guide →

Instructions

  1. 1

    Muddle mint leaves with simple syrup in a glass to release oils and aroma

  2. 2

    Add the rum to the mixture

  3. 3

    Add ice and stir to chill the drink

  4. 4

    Garnish with a fresh mint sprig

  5. 5

    Serve in an angled crystal coupe glass and enjoy

Tips

Tip 1

Gently muddle mint to bruise, not shred the leaves. Overmudgling releases bitter compounds and destroys the delicate herb structure, dulling the cocktail's fresh character.

Tip 2

Use freshly made or quality bottled simple syrup. The sweetness balances the rum's oak and port notes; weak syrup will make the drink taste thin and spiritless.

Tip 3

Chill your coupe glass before serving. A cold glass keeps the cocktail properly chilled longer and prevents dilution from rapid ice melt.

Good to Know

Make Ahead

Prepare simple syrup in advance and store in an airtight container at room temperature for up to one month. Mint and rum should be fresh at serve time.

Serve With

Serve immediately in a chilled angled crystal coupe glass as an aperitif or evening cocktail.

Common Mistakes

Watch

Overmuddle mint to avoid bruising leaves and releasing bitter tannins that spoil the bright herbal flavor

Watch

Use lukewarm or room-temperature spirits to avoid watering down the drink with excessive ice melt during stirring

Substitutions

Simple Syrup
Honey syrup1:1sweetenerhoney

adds floral notes, slightly thicker mouthfeel

Ruby Port Cask Finished Rum
Standard aged rum1:1alcoholrum

loses port and oak complexity

Mint Leaves
Basil leaves4 leavesherbfresh

shifts profile toward peppery and savory

Full guide →
Find more substitutions →

FAQ

Can I make this cocktail without a coupe glass?

Yes, use any chilled glass such as a rocks glass or Nick and Nora glass. The coupe glass is traditional and elegant, but the cocktail's flavor and quality depend on ingredients and technique, not glassware.

What if I don't have Ruby Port Cask Finished Rum?

Substitute with any quality aged rum, such as Barbados or Caribbean aged rum. You'll lose the port cask influence and oak complexity, but the cocktail remains balanced and refreshing. Adjust sweetness slightly if needed.

How long can I batch this cocktail ahead for a party?

Do not batch muddled mint cocktails; the herb loses potency and turns bitter within minutes. Instead, muddle and stir each drink fresh. You can pre-batch the rum and syrup ratio separately and chill it, then muddle mint and combine at service.