breif overveiw
contains a chemical similar to THC (cannibis)
the color depends on the strength of the psycotropic-chemical
the spoon is used in two ways one you pour the iced water over the cube disoloving it or breifly soak the cube then ignite over glass of absinthe letting molten sugar drop into it
sugar is used to sweeten it (very bitter i beleive)
some web sources are
http://www.absinthe.bz/
http://www.absinth.com/
http://www.erowid.org/chemicals/absinthe/absinthe.shtml