If desired, salt or sugar the glass rim by first running a lime wedge around the edge of the glass. Then roll the glass rim in sugar or salt.
If using pomegranate seeds, place the seeds in the bottom of the glass and crush with a muddler or wooden spoon to pop the seeds and release the juices.
Fill the glass with ice. Pour all ingredients over the ice. Stir.
Garnish with lime wedges and pomegranate seeds as desired.