Peary Kale

1 pear
2 cups of kale (pull leaves from two stalks to make two cups) or 2 cups spinach
1 lime (juiced or remove the seeds and add the flesh, too) or one lemon
1 small handful of cilantro (pull the leaves from the stalks)
1 orange
2 teaspoons ginger freshly grated
1/3 cup chopped frozen banana (entirely optional, add if you want a more creamy texture)