It seems that kale is everywhere these days — from kale smoothies to crunchy kale chips. Kale is a leafy green vegetable, similar to wild lettuce. It has a peppery flavor and is a hearty complement to many foods. Kale is rich in vitamins A, C and K, and is packed full of iron. Leafy green vegetables like kale are lower in carbohydrates and calories than starchy vegetables like potatoes, which makes them a great option if you're trying to lose weight. Click here to learn more about the health benefits of kale and how to make this affordable superfood part of your diet.