Prepare cranberry simple syrup. Add 2 cups fresh, whole cranberries to a heavy sauce pan. Combine with 2 cups sugar and 2 cups water. Bring to a boil. Reduce heat to a heavy simmer. You will hear the cranberries begin to pop. Mash the berries and stir well to incorporate all of the sugar. Allow to simmer an additional 2-3 minutes. Strain the mixture to remove the berry pulp. Refrigerate.
Add all ingredients to a cocktail shaker. Shake well (no ice). The mixture should be very frothy. Add crushed ice and shake again. I like to serve the drink in a rocks glass with a large ice cube. Strain the cocktail into the serving glass. Garnish with a sprig of fresh sage, rosemary or thyme. Add a few fresh cranberries for garnish. If you want to impress your guests, use sugared cranberries on a skewer.
Use pasteurized eggs for this recipe. The addition of alcohol and an acid (lemon juice) in correct proportions will also help reduce the spread of any food-borne disease.