Zwackberry Flip

Pro tips

• Dry shake first (without ice) for 10-15 seconds to fully emulsify the egg white, then add ice and shake hard for another 10 seconds for maximum foam.
• Chill your coupe glass beforehand; the cold surface helps the foam head hold longer and improves texture.
• Use fresh blackberry puree if possible—it brightens the herbal notes; thaw frozen berries and strain to remove excess seeds.
• Add the vanilla extract last to avoid breaking the egg foam during the shake.

Substitutions

• Blackberry puree → Raspberry puree (slightly brighter, less earthy)
• Espresso liqueur → Kahlúa or coffee liqueur (more vanilla forward, less dry)
• Allspice liqueur (pimento dram) → Angostura bitters, 3-4 dashes (loses the spiced warmth but maintains structure)

Equipment

cocktail shaker · coupe or sour glass · bar spoon · jigger

Can I make this cocktail without egg white?

Yes, omit the egg and shake without it, though you'll lose the signature silky foam. The drink will be thinner but still balanced.

What does Zwack Unicum taste like?

Zwack Unicum is a dark Hungarian herbal liqueur with bitter, spiced notes of caraway and citrus—it anchors this drink's complex flavor profile.

Can I substitute the blackberry puree?

Fresh or thawed blackberry puree works best; strain if using frozen berries to remove seeds. Raspberry puree is a close substitute.

Why is this drink called a 'Flip'?

A flip is a cocktail category that includes egg (white or whole) shaken for a creamy, foam-topped texture and richer mouthfeel.

Should I worry about raw egg in this cocktail?

Use pasteurized eggs or pasteurized egg white products if raw eggs are a concern for you or your guests.