Acapulco Rum Cocktail

Pro tips

• Perform a dry shake with egg white and other ingredients for 10–15 seconds before adding ice to build a stable foam.
• Use fresh lime juice, not bottled, for bright acidity and balance against the sweetness and spirit.
• Strain into a coupe or cocktail glass over fresh ice or into a chilled glass for best texture and presentation.
• Measure triple sec precisely (1.5 teaspoons is small); too much will overpower the rum and lime.

Substitutions

• Old Mr. Boston Rum → light or gold rum (cleaner citrus character)
• Egg white → aquafaba or egg white powder (vegan/dietary alternative)
• Old Mr. Boston Triple Sec → Cointreau or Curaçao (richer or more citrus-forward)

Equipment

cocktail shaker · jigger or measuring spoon · cocktail strainer · coupe or cocktail glass

Can I make this cocktail without egg white?

Yes. Omit the egg white for a standard sour-style drink, though you'll lose the silky mouthfeel and foam top that define this recipe.

What type of rum works best for this cocktail?

Old Mr. Boston Rum (specified in the recipe) works well; light or gold rum will give a cleaner citrus profile, while spiced rum adds warmth.

How do I properly shake a cocktail with egg white?

Dry shake (without ice) for 10–15 seconds first to emulsify the egg white, then add ice and shake again for 15 seconds until chilled and foamy.

Is this cocktail safe with raw egg white?

Raw eggs carry salmonella risk; use pasteurized egg white or liquid egg white product if you have health concerns.