Devised by Creole apothecary Antoine Amédée Peychaud in the mid-19th century, these neon-red, anise-forward bitters owe their popularity to the Sazerac cocktail. They’re a necessary element in plenty of other classic cocktails as well.
Peychaud’s Bitters are the go-to brand, but Scrappy’s Cajun Bitters and Bitter Truth Creole Bitters are also excellent choices.