The main herbs used to produce absinthe are green anise, florence fennel and grande wormwood, often called the 'holy trinity'. Many other herbs may be used as well, such as hyssop, melissa, star anise, petite wormwood ("Artemisia pontica" or Roman wormwood), angelica root, Sweet Flag, dittany leaves, coriander, veronica, juniper, nutmeg, and various mountain herbs.