Negroni ingredient (7)
(Other definitions for campari that I've seen before include "bitter drink" , "Mildly bitter aperitif, often drunk with soda" , "Pinkish aperitif" , "Red, bitter-sweet Italian aperitif" .)
(Other definitions for gin that I've seen before include "It often gets mixed up with this" , "It could be used for drinking" , "Alcohol for the snare" , "Spirit; trap" , "Machine for separating cotton from its seeds" .)