To make vanilla infused vodka, add 4 vanilla beans to a 26 oz bottle of vodka and let sit, or use pre-infused vodka (there at at least two major brands produced). Use Cranberry Cocktail (a mix of cranberry juice, water and sugar) or products labelled as Cranberry Juice that contain apple or grape juice (100% pure cranberry juice is too tart). Mix all ingredients in a shaker over ice. Strain into pre-chilled martini glass. Can also be served over ice in an cocktail glass.