I can say that this is not one of my favorite cocktails taste wise. It is very strong, for it has only alcohol and only strong alcohol. And I was never fond of the combination between champagne and vodka, but some of you might like it.....
1 1/2 ounce vodka from the freezer
1/2 ounce chilled champagne
1 sugar cube
1/4 ounce absinthe