Components.

For the cooking infusion of tansy, better use a fresh herb of which press juice , and herb has 0.25 till 1.32 essential oils and bitterness till 15 000.Oleum absinthe is having glycoside bitterness absinthin and essential oil absinthe as 3-10 perc. of alfa and beta tuition or terpene, which analogically for tanaseton of tansy oil and sage oil of sage. And also in oil of tansy has alcohol terpene, felandren, codeine, pinen, prochamazulen, of which a pressing juice with a water stew is getting blue chamazulene as giving for oil a green or blue shadow. Glucoside bitterness which a selected for first time by Merc on 1894 as absinthin is a mixture of 4 different bitterness as absinthin,anabsinthin, artabsin, anabasine.
A bitter of green color also a bitter, like a gall and having a same carbohydrate structure,than in gall pigment bilirubin.