It's a vodka martini. That's all. Just a vodka martini.
Why is it called a Kangaroo Cocktail? Well, if the folks at Serious Eats (thanks, Grey!) don't know, no one knows.
The recipe in the Guide is as straightforward as it gets.
Ingredients:2 parts Vodka1 part Dry VermouthDirections:Stir with ice, strain into a chilled cocktail glass, and garnish with a lemon twist.
The lemon twist gives the drink a limoncello nose, but then it's vodka and vermouth all the way. And I'm not opposed to that! It's a different flavor profile than we're used to around here, and sometimes it's nice to stir things up.
Speaking of chilly things... We finally got our first freeze a few days ago. Nothing compared to the icy temps everywhere else (it's crazy in Idaho!), but still - our first freeze!