Pour all ingredients into a cocktail shaker with ice. Shake vigorously.
Using a funnel, pour the mixture into four 3-inch clear glass ornaments that have been rinsed. Replace the topper on each ornament.
Add sugared cranberries and a rosemary sprig to four martini glasses. Set the ornament in the glass to serve. Before drinking, slowly pour the contents of the ornament onto the cranberries.