Broccoli Rabe is a nutritious vegetable that is related to the turnip and has a mustard-like flavor. It is not related to broccoli, even though it has buds that look like broccoli. When purchasing, make sure that the leaves are green and crisp. Rapini origins have been traced to the Mediterranean region around Italy and to China, where it remains popular in both of these nationalities cooking. We have included nutritional charts for both raw and cooked broccoli rabe. As can be seen in these charts, this is one of those vegetables that cooking releases more of the food value. To enlarge the photo and see the nutritional charts, click on the photo or link.