Amargo Chuncho bitters, also known simply as Chuncho Bitters, is a Peruvian bitters product traditionally used to prepare a pisco sour cocktail. It is produced in Lima, Peru, from 30 various peels, herbs, roots, barks, and flowers from the Peruvian forest – including Quina and Sarrapia leaves, and aged for six months in barrels, allowing the flavors to meld and develop, contributing to the distinctive taste of the cocktails they are used in.