Archil, also orcein, orchil, lacmus, and C.I. Natural Red 28 is a bluish red paste made of lichen that was used as a food coloring until it was banned in 1977.
Archil
a variable mixture of chemical compounds isolated from lichens
Also known as:
English:
dyer's mossorceinorchil
French:
orseille
Wikidata ID:
Q425645
Wikipedia title:
Orcein
ID: 14117