Despite its impressive nutrient content, cabbage is often overlooked. While it may look a lot like lettuce, it actually belongs to the Brassica genus of vegetables, which includes broccoli, cauliflower and kale. It comes in a variety of shapes and colors, including red, purple, white and green, and its leaves can be either crinkled or smooth. This vegetable has been grown around the world for thousands of years and can be found in a variety of dishes, including sauerkraut, kimchi and coleslaw. Additionally, cabbage is loaded with vitamins and minerals.