Angostura and Peychaud’s bitters are key ingredients in classic cocktails like the Old Fashioned, Manhattan, and Sazerac.

Calling the ingredient "bitters" may be a disservice to it. To find out exactly what bitters are and why some cocktails need them, we spoke with an expert.

According to Pardilla, there are three types of bitters you need to have on hand to make several classic cocktails at a moment's notice: Angostura bitters, Peychaud's bitters, and orange bitters.

It started as a medicinal elixir, was embraced by the Old Fashioned at the advent of cocktail history, and has been a mainstay of cocktail culture for two hundred years… now ANGOSTURA® aromatic bitter ...

The company: Angostura-Wuppermann. The brew: Angostura-bitters. Actor Morgan’s real name is Francis Phillip Wuppermann. Josephine Wuppermann, his mother, is, at 82, president and treasurer of ...

Bitters: I didn’t mess with this variable ... I’ve only ever used Angostura. One of the reasons Angostura is so ubiquitous is that it has somehow struck the perfect balance and flavor profile ...

Marshall V. Minaya, beverage director of New York City’s Valerie, Madame George, and Lolita, describes Angostura bitters as “a full-bodied, rum-based cinnamon bomb, completely balanced with ...