Bitters are highly concentrated flavor extracts — think of them as the salt and pepper of cocktail making. A few dashes season a drink, adding depth, complexity, and a background note that makes everything else taste more like itself. They're made by macerating botanicals, bark, citrus peel, spices, or herbs in high-proof alcohol over time. The alcohol extracts the flavor compounds; the high concentration means a dash or two is all you need. Traditional bitters like Angostura contain alcohol but are used in such small quantities that the effect is negligible.
Why It Matters
Bitters are the reason a cocktail tastes like more than the sum of its parts. An Old Fashioned without bitters is whiskey and sugar. With two dashes of Angostura, it becomes something with warmth, complexity, and spice that didn't exist before. Bitters also help bridge disparate flavors — they're part of why sweet and sour work together in the same glass.
Where You'll Use It
Old Fashioneds, Manhattans, Negronis, and virtually any stirred cocktail. Also in sours, where they can add a complexity underneath the citrus.
Worth Knowing
Aromatic Bitters
Aromatic bitters are the most common category — led by Angostura, which is the default bitters in most recipes. They're warm, spiced, and complex: cinnamon, clove, dried fruit, and something bitter underneath. When a recipe calls simply for "bitters" without specification, aromatic bitters is usually what's meant.
Orange Bitters
Orange bitters are brighter and more citrus-forward than aromatic bitters, with a bitter orange peel character that sits below the surface of a drink. Classic in Martinis, Negronis, and anywhere you want citrus complexity without adding juice. Regans' and Fee Brothers are common brands.
NA Bitters
Non-alcoholic bitters are made without high-proof alcohol as the extraction base — typically using vegetable glycerin or other food-safe solvents instead. They are functionally and flavorfully similar to traditional bitters in the quantities used. Several quality NA bitters brands now exist, including All The Bitter and Hella. They're appropriate any time you want to keep a drink completely alcohol-free.