If you are rightly concerned about chucking expensive absinthe down the drain then consider straining into a shot glass and serve on the side. The roughly...
I love this site and the community of discerning drinkers, but I gotta say why does everyone treat absinthe like it's turpentine? I throw a splash in over ice while I make my drinks and I leave it in -bc hey it's GOOD. Same with my Hemingways, throw in a splash while shaking up the other parts and mix it all in. I say don't toss the absinthe, drink it!