The Romanesco broccoli in the upper left corner is part of the brassica family, just like these colorful cauliflower varieties. Sang An/Courtesy of Ten Speed Press hide caption

itoggle caption Sang An/Courtesy of Ten Speed Press

Instead of throwing out the nutritious broth that's left over when you cook down greens, why not use it as the base for a delicious dish like this rockfish with clams in a garlic-shallot pot liquor sauce? Alison Aubrey/NPR hide caption

itoggle caption Alison Aubrey/NPR

First Lady Michelle Obama chats with Illana Gonzales-Evans from Washington at the first Kids State Dinner. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP