What is Angostura Bitters?

Angostura aromatic bitters are a concentrated alcoholic infusion — botanicals macerated in spirit — bottled at about 44% ABV. The formula is proprietary; the perceptible architecture is baking spice, gentian-family bitterness, and a lingering herbal finish. In cocktail structure, bitters function as seasoning: small volumes (dashes) that bind sugar, spirit, and dilution the way salt binds a sauce.

When a home recipe says bitters without qualification, it almost always means this bottle, not orange bitters and not Peychaud’s. Old Fashioneds, Manhattans, and a large class of whiskey drinks assume Angostura’s spice profile.

Clove, cinnamon, gentian-like bitterness, and a cola-spice register. A few dashes season a stirred whiskey drink; a milliliter too much reads as potpourri and overwhelms the spirit. The preparation is intensely bitter and aromatic by design — it is not meant to be drunk as a beverage.

The formula is attributed to Johann Gottlieb Benjamin Siegert, a German surgeon in Simón Bolívar’s army, who began producing the bitters in the 1820s in Angostura (now Ciudad Bolívar, Venezuela) as a medicinal tonic. Production later moved to Trinidad, where the House of Angostura still bottles it.

The town name outlasted the original site as a brand. The oversized paper label is historical; the bottle is small because the product is used by the dash. It became the default aromatic bitter of the American bar in the 19th century and has remained so.

Dash; do not pour. Two to four dashes typically season an Old Fashioned (spirit, sugar, bitters, water or ice) or a Manhattan (whiskey, sweet vermouth, bitters). Store at room temperature; the high alcohol and concentrated extract are stable for years.

Orange bitters are a different botanical preparation and will not substitute 1:1 in whiskey drinks that expect Angostura’s clove-and-gentian profile.