However, a very common ingredient in most bitters is gentian (Gentiana spp.), a flowering plant with a long medicinal history. Gentiana lutea is the most common type of gentian in drinks.

But Bitters Are Alcoholic So It’s Not A Mocktail ... “The taste (of Angostura) features prominent bitterness from gentian root, warm spices like cinnamon and cloves, bright citrus notes ...