Black Vodka is made by infusing catechu extract into the vodka. The resulting vodka has a deep purple - black color but not a change in taste.
Take 4 oz of cranberry juice and put it in a sauce pan and reduce by half. Allow to cool.
Add in the reduced cranberry juice, black vodka and orange juice into a cocktail shaker. Fill with some ice. Add in the color if using.
Give it a hard shake for 15 to 20 seconds.
Add a bit of dry ice into the martini glass and pour the drink over it.
Serve immediately topped with some sugared cranberries
1)To increase the cranberry flavor, you could boil some fresh cranberries with the juice while making the reduction.
2)If the color of your drink is not a true black, reduce or omit the orange juice or add a hint of edible black color.