The Commission proposed that anything labelled absinthe must contain thujone and suggested minimum and maximum levels of five to 35 milligrams per kilogram.

BBC: Europe

Like a cocktail expert, I would press my herbs into sugar syrup to capture the fragrance of their volatile oils linalool, eugenol, citral, thujone, camphor.

NPR: Garden in a Glass: Herbal Teas, Lavender Martinis

They say thujone is "not an indispensable characteristic" of absinthe.

BBC: Europe

At issue is whether absinthe needs to contain minimum levels of two substances - anethole and the chemical thujone, a toxin extracted from wormwood, which reputedly has mind-altering effects.

BBC: Europe