Campari is a translucent dark red liqueur that’s most commonly drunk by itself as an aperitif (before a meal) or in cocktails like the Negroni. It’s made from herbs and fruit and is often referred to as bitter. Campari is a proprietary recipe owned by one company, Campari Group, so there are no generic or “other brand” versions.
A glass of Campari smells bitter in the way that orange rinds and bitter greens smell. Tasting it, however, reveals much more. The bitterness is still strong, at the start and again at the finish, but there are notes of sweet cherry and orange, and a spicy edge reminiscent of cinnamon. The longer you sip on it, the more apparent the sweetness becomes. But the bitter never goes away.
The aftertaste is purely the bitterness. Of course, if you’re having it before a meal as it’s often served, you won’t taste that for long.