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
Liqueur coffee names sometimes given to liqueur coffees. Some, such as Irish coffee, are widely used and more-or-less standard (there is actually an "official" recipe, but it is not enforced); others local and idiosyncratic. There are many variations in nomenclature: the same name may be used for different combinations: Liqueur coffee A liqueur coffee is a coffee drink with a shot of liqueur. It may be served in a special liqueur coffee glass, often with cream and sugar. Liqueur coffee are all variants on what is widely known as Irish coffee, hot coffee with whiskey and a layer of cream (not whipped)