Add all ingredients except ginger beer into a shaker with ice and shake.
Strain into a rocks glass over fresh ice.
Top with ginger beer.
Garnish with pomegranate seeds, sliced grapefruit and a rosemary sprig.
*Goji ginger syrup: Add 4 oz ginger juice, 1/2 cups granulated sugar, 1 tbsp goji berries into a blender and blend at medium speed. Strain and pour into a sealed container. Keep refrigerated up to 2 weeks.