Cocktail Bitters vs Bitter Liqueurs: What's the Difference?

Cocktail bitters are highly concentrated botanical extracts used by the dash to season a drink. Bitter liqueurs like Campari, Fernet Branca, and Aperol are full-strength ingredients used by the ounce as a core component of a cocktail. Cocktail bitters are a finishing touch. Bitter liqueurs help define the drink itself.

Cocktail bitters are made by macerating botanicals in high-proof neutral spirit, resulting in an intensely concentrated product typically between 35-50% ABV. Bitter liqueurs start with a similar infusion process but are diluted, sweetened with sugar, and sometimes colored. The addition of sugar and lower concentration is what makes them drinkable in larger quantities.

Cocktail bitters are measured in dashes. Two or three dashes of Angostura in an Old Fashioned is a typical amount. Bitter liqueurs are measured in ounces. A Negroni calls for a full ounce of Campari. You would never pour an ounce of cocktail bitters into a drink, and a few dashes of Campari would barely register.

Absolutely. Many classic cocktails use both. A Boulevardier combines bourbon, sweet vermouth, and Campari (a bitter liqueur) and benefits from a couple of dashes of aromatic bitters. Using both layers different types of bitterness: the liqueur provides body and a broad bitter backbone while the cocktail bitters add aromatic complexity on top.

Start with one of each. A bottle of Angostura aromatic bitters and a bottle of Campari will let you make dozens of classic cocktails between them. The Angostura covers the dash-of-bitters world (Old Fashioned, Manhattan) and the Campari covers the bitter liqueur world (Negroni, Americano, Spritz). From there, expand based on what you enjoy drinking.