Acapulco Rum Cocktail With Egg White

Pro tips

• Use a dry shake first (shaking egg white without ice) for 10 seconds to build air and emulsification before adding ice.
• Use fresh lime juice, not bottled, for bright acidity that balances the sweetness and rum.
• Chill your glass before serving to keep the foam intact and the drink cold longer.
• Pour carefully over the foam to preserve the top layer—don't pour directly onto the egg white.

Substitutions

• Old Mr. Boston Rum → any light or gold rum (maintains tropical profile)
• Old Mr. Boston Triple Sec → Cointreau or other orange liqueur (higher quality, slightly drier)
• Egg white → 1/2 oz aquafaba or pasteurized egg white product (vegan or food-safety alternative)

Storage & make-ahead

Cocktails are meant to be consumed immediately after preparation; do not store.

Equipment

cocktail shaker · jigger · bar spoon · fine strainer or Hawthorne strainer

Can I make this cocktail without egg white?

Yes, you can omit the egg white for a simpler version, but you'll lose the signature silky foam and creamy mouthfeel that defines this drink.

How do I get a proper foam on top?

Dry shake (without ice) first to aerate the egg white, then shake again with ice. This creates a dense, stable foam.

Is raw egg white safe in cocktails?

Use pasteurized eggs or pasteurized egg white products to reduce food safety risk. Many bars use these products for this reason.

What can I use instead of Old Mr. Boston Rum?

Any light or gold rum works; adjust to taste. The drink relies on the rum as its base spirit.

How long should I shake this cocktail?

After the dry shake, shake vigorously with ice for 10-15 seconds until well-chilled and the foam is full and dense.