Absinthe "the holy trinity." Many other herbs may be used as well, such as petite wormwood ("Artemisia pontica" or Roman wormwood), hyssop, melissa, star anise, angelica, peppermint, coriander, and veronica. Adding to absinthe's negative reputation in the late 19th and early 20th centuries, unscrupulous makers of the drink omitted the traditional colouring phase of production in favour of adding toxic copper salts to artificially induce a green tint. This practice may be responsible for some of the alleged toxicity historically associated with this beverage. Many modern day producers resort to similar (but non-deadly) shortcuts, including the use of artificial food colouring
Chartreuse (liqueur) roots", and that yellow chartreuse is, "Similar to above, adding cardamom seeds and socctrine aloes." However the recipe remains a secret. The monks intended their liqueur to be used as medicine. The recipe was further enhanced in 1737 by Brother Gérome Maubec. The beverage soon became popular, and in 1764 the monks adapted the elixir recipe to make what is now called Green Chartreuse. In 1793, the monks were expelled from France along with all other Religious Orders and manufacture of the liqueur ceased. A copy of the manuscript was made and kept at the Monastery. The original left with