-leaves cut into 4 cm Wide strips (Not really "Heart Healthy" because of the sodium content, but no fat, so I'll include it in the category.) In a very large skillet, combine the ginger, salt and half cup of water and bring to a boil over high heat. Add the spinach, kale and Swiss chard, packing them down with the pan lid. Cover and cook over high heat, stirring, until tender, about 5 minutes.