Sweet, yet savory! We already know that the babies love sweet potatoes, and it's time to introduce some dark, leafy greens - the sweet potato will mask the bitterness of the kale, while still getting the wonderful benefits of kale. Kale is one of the best sources of Vitamin K, as well as being high in Iron. It also has more calcium per calorie than milk. You can see why getting kale in your baby's diet is of utmost importance!