“Green Fairy” is a nickname for absinthe, a spirit known for its vibrant green color and strong herbal flavor, primarily derived from wormwood, anise, and fennel. Historically linked with the bohemian culture of the 19th century, absinthe was believed to have psychoactive properties, though modern science disputes this. It is often served using a traditional ritual involving water and a sugar cube dripped over a slotted spoon, which dilutes the spirit and changes its color to a milky green.