Here's the recipe as I adapted it from Ina Garten's Barefoot Contessa Back to Basics.
Pour all the ingredients into a shaker with ice. Shake like a barkeep, enjoying the captivating sound of swishing and clinking, until the shaker is very cold. Pour into martini glasses. Savour and relax, enjoying the twinkle and glow of the season. Cheers!
You can omit the cranberry juice and use 1/2 cup pomegranate juice instead for an even more ruby red and delicious cocktail. This is a pretty potent drink, at least in my opinion. If you prefer something a little milder, decrease the vodka or add extra juice.
Pomegranate Cosmopolitan https://urbancottagelife.com/pomegranate-cosmopolitan/