Six nutritious low cost foods to toss in your shopping cart.

Most Americans are looking for ways to lower their grocery bill, so we asked Adam Drewnowski, Ph.D., director of the Nutritional Sciences Program at the University of Washington School of Public Health and Community Medicine, to tell us what foods he thinks are affordable and nutritious. "Go back to the basics," he recommends. "The things that we've always known but forgot as we were chasing after the latest baby vegetable or exotic fruit."