The Greenhound is a riff on two drinks: The Greyhound and the Salty Dog. The Greyhound is simply vodka and grapefruit juice, and the Salty Dog is the same, except with salt on the rim of the glass. My good friend John McGrew brought over the makings for Greyhounds the other day, and while I like the idea of the grapefruit, I wasn't so much feeling the vodka. I was craving an absinthe drink. After a couple of days of experimentation, I arrived at what I'm going to be drinking for the rest of the summer. And maybe the rest of my life.