Gentians
Gentians are growing all over the world from the Alps to New Zealand, Africa and Asia and are named after a Greek king in the Iliad who discovered that Gentian has appetite-inducing properties. Gentian is popular to use in medicinal drugs as well as drinks and have a bitter taste. In fact, the spirit Angostura Bitter, which is an important component of a Manhattan is said to contain just Gentian.
The aroma from Gentian is also the somewhat bitter, sharp and strong