Aperitif/Liqueur · Sour · Herbaceous
Fernet Sour Recipe
Fernet-Branca's minty, medicinal bite, shaken silky and citrus-bright. Equal parts bracing and refreshing, the Fernet Sour turns a love-it-or-hate-it amaro into a frothy, well-balanced sour that works as a bittersweet nightcap or a bartender's post-shift ritual poured for someone else.
- Prep Time
- 1.5 min
- Method
- Shaken
- Glass
- Coupe glass
- Strength
- Balanced
Every recipe on Sipped Right is tested for taste and balance before it's published.
Last updated October 20, 2026
About the Fernet Sour
Fernet-Branca is an Italian amaro created in Milan in 1845 by the Fratelli Branca distillery, blending dozens of herbs, roots and spices into a famously bitter, menthol-edged liqueur. The Fernet Sour applies the centuries-old Sour format — spirit, citrus, sweetener — to that amaro, a modern bartender's move that softens Fernet's sharpest edges into something rounder and more approachable at the table.
The Fernet Sour follows the same 2:0.75:0.5 spirit-lemon-syrup backbone as a Whiskey Sour, then adds a whole egg white for body: 2oz Fernet-Branca, 0.75oz fresh lemon juice, 0.5oz simple syrup and 1 egg white. Because Fernet's bitterness and menthol intensity are far sharper than whiskey's oak sweetness, the lemon and syrup carry more of the balancing work, rounding out the amaro rather than competing with it.
Ingredients
- Fernet-Branca2 oz
- Fresh lemon juice¾ oz
- Simple syrup½ oz
- Egg white1, or 0.75 oz pasteurized
A few dashes of Angostura bitters are used only as a garnish swirled into the foam, not shaken into the drink itself.
Method
- Measure and pour the Fernet-Branca, fresh lemon juice, simple syrup and egg white into the shaker.
- Dry-shake without ice for 15 seconds to emulsify the egg white.
- Add ice to the shaker.
- Shake for 15 seconds.
- Fine-strain the cocktail into a chilled coupe glass.
- Ready the Angostura bitters.
- Dash 2-3 drops onto the foam and swirl gently to garnish.
Glass & Garnish
Coupe glass, chilled. Garnish with a few dashes of Angostura bitters swirled into the foam.
Notes
Egg white gives this drink its classic frothy texture — dry-shake it with the other ingredients. Not to be confused with the Industry Sour, a different drink with Green Chartreuse and lime; this one is the lemon-based Whiskey Sour format applied to Fernet-Branca.
Tools Used
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FAQ
- Can I batch this for a party?
- Batch the Fernet-Branca, lemon juice and simple syrup ahead in a bottle (multiply each by your guest count) and refrigerate. Add egg white per drink at serving time and shake individually — egg-white foam does not hold up well pre-batched, so that part is always made to order.
- Is there a substitute for egg white?
- Aquafaba (chickpea brine) is the standard vegan substitute — use about 0.5 oz in place of the egg white and dry-shake exactly the same way for a similar silky foam. You can also skip it entirely for a clean, spirit-forward sour with no foam; just shake once with ice and fine-strain.
- Can I use a different amaro instead of Fernet-Branca?
- You can, but the drink changes character quickly — Fernet-Branca's minty, medicinal bitterness is much sharper than most amari. Averna or Amaro Montenegro make a softer, sweeter sour (closer to an Amaro Sour), while sticking with Fernet keeps this drink's distinctive cooling, herbal bite.
- What is the difference between a Fernet Sour and an Industry Sour?
- They are closely related but distinct: the Industry Sour adds equal parts Green Chartreuse and swaps lemon for lime, making a sweeter, more herbal drink, while this Fernet Sour keeps the classic Whiskey Sour format of spirit, lemon, syrup and egg white with Fernet-Branca as the sole base. Some blogs use the names interchangeably, but they taste noticeably different.
- What is the classic garnish for a Fernet Sour?
- A few dashes of Angostura bitters swirled into the egg-white foam, rather than a fruit garnish — the bitters add aroma and a marbled look without competing with Fernet's own bitterness. Simply dash 2-3 drops on top after straining and swirl gently with a cocktail pick or straw.
- Is the Fernet Sour a classic cocktail?
- No — it is a modern bartender's application of the centuries-old Sour format (spirit, citrus, sweetener) to Fernet-Branca, not a codified recipe. It is popular in craft bars that already pour Fernet as a shift drink, turning the amaro into something more approachable and drinkable at the table.
