Potatoes come in all colors, like these Red Erik, Snowball, Cariboo, Purple Peruvian, Caribe and French Red varieties. David Cavagnaro/Corbis hide caption

Tiny spuds decked out with cheese fondue sauce and a sprinkling of broccoli shavings at a dinner sponsored by the U.S. Potato Board. Benjamin Morris/NPR hide caption

Potatoes, especially served like this, are at the center of a school lunch debate. iStockphoto.com hide caption