4 cups kale, tough stems removed and coarsely chopped (see note)
4 cups romaine lettuce
1 cup pomegranate juice
1 cup frozen blueberries
1 cup frozen strawberries
1 Medjool date or 2 regular dates, pitted (see note)
2 tablespoons ground flax seeds
1/2 ripe avocado, pitted and peeled