In the same skillet over medium heat, with the remains of fat from the bacon, sauté onion until translucent, about 2 -3 minutes. Add garlic and let cook for 1 minute, stir constantly. Add the kale, in batches, and mix well until everything is well incorporated. Season with salt and pepper to taste and mix. Add water, cover and cook for 5 minutes. Uncover and cook for 8 minutes, or until kale is tender.