angostura bark

noun

an·​gos·​tu·​ra bark ˌaŋ-gə-ˈst(y)u̇r-ə- 

: the aromatic bitter bark of either of two South American trees (Galipea officinalis and Cusparia trifoliata) of the rue family used especially formerly as a tonic and antipyretic

called also angostura