We all know that we should eat our vegetables. Lots of vegetables, in a rainbow of colors. The current U.S. Dietary Guidelines recommend 2 1/2 cups of vegetables per day, and 1 1/2 cups of fruit.

Unlike bulb vegetables, they're solid on the inside and do not consist of several layers. A few types of corms are: Celery root, or celeriac, which is the root of a celery stalk. It looks like a ...