Boston Sour Whiskey Cocktail

Pro tips

• Shake hard and long (10–15 seconds) with ice and egg white to create a stable, creamy foam.
• Use fresh lemon juice, not bottled, for balance and brightness.
• Chill your glass beforehand for a colder, more refreshing drink.
• Dry shake (shake without ice) first if you prefer a taller, more voluminous foam.

Substitutions

• Old Mr. Boston Whiskey → bourbon or rye (adjust sweetness if needed)
• Powdered sugar → simple syrup, 1/2 oz (easier to mix)
• Egg white → aquafaba, 1/2 oz or 1 tbsp (vegan alternative)

Can you make a Boston Sour without egg white?

Yes, omit the egg white for a lighter version, though you'll lose the signature silky texture and foam.

What whiskeys work best in a Boston Sour?

Bourbon, blended whiskey, rye, or Canadian whiskey all work well. Choose based on flavor preference—rye adds spice, bourbon adds sweetness.

Do you need to shake vigorously with egg white?

Yes, shake hard for 10–15 seconds with the egg white to create a stable foam and proper emulsion.

Is raw egg white safe?

Use pasteurized eggs or pasteurized egg white products if concerned about food safety.

Can you batch this cocktail?

Yes, multiply the ingredients and store in a pitcher; shake with ice and egg white in batches before serving.