For a sweeter Appletini, add 1 teaspoon of simple syrup to the shaker. For a more tart version, increase the lemon juice to 3/4 oz. For a more vibrant green color, add 1-2 drops of green food coloring before shaking. To batch for a crowd, multiply the liquid ingredients (no ice), store in a pitcher in the fridge up to 24 hours, and shake individual servings with ice to order.