Frozen Berkeley

Pro tips

• Blend all liquid ingredients with crushed ice until smooth and slushy; over-blending releases too much ice water and dilutes the drink.
• Use fresh lemon juice, not bottled, to preserve the bright acidity that balances the passion fruit sweetness.
• Chill your glassware before serving to keep the drink frozen longer.
• Add passion fruit syrup gradually if using homemade versions, as sweetness levels vary widely.

Substitutions

• Old Mr. Boston Rum → light rum or white rum (smoother, less molasses flavor)
• Old Mr. Boston Five Star Brandy → cognac or VS brandy (adds elegance, slight increase in cost)
• Passion Fruit Syrup → passion fruit puree or nectar (adjust consistency; nectar may require less added syrup)

Storage & make-ahead

This is a fresh frozen drink best consumed immediately; do not store blended.

Equipment

blender · cocktail glassware (coupe or highball)

What type of rum should I use for Frozen Berkeley?

Old Mr. Boston Rum is specified in the recipe, but light or gold rum works well as a substitute for a smoother tropical flavor.

Can I make Frozen Berkeley without a blender?

Yes, you can crush the ice finely and stir all ingredients together in a glass, though blending creates a smoother, more integrated texture.

Is passion fruit syrup essential?

Yes, passion fruit syrup is the defining ingredient. It can be homemade or store-bought, but substitutes like passion fruit puree or nectar will change the flavor profile.

How much does this recipe yield?

This recipe makes one serving, approximately 5-6 ounces depending on ice melt and blending time.

What glassware should I use?

Serve in a coupe glass, highball glass, or margarita glass for a presentation-ready frozen cocktail.