Kale has a fibrous stem that isn't edible raw. To remove this stem, fold the kale leaves in half so that the stem is exposed along one side. Run a knife along the stem, cutting it away. Discard the stem. Tear or chop the kale into bite-sized pieces. Then, add the chopped kale to a salad spinner. Rinse and spin dry. You may also rinse and dry the whole leaves before chopping.