Picking plants from your local park and taking them home for dinner is -- forgive us -- a growing trend in cities across the country. So how hard is it to harvest a fresh, free meal from the urban jungle? We asked Leda Meredith, author of The Locavore's Handbook and Botany, Ballet, and Dinner from Scratch, to show us how it's done one recent morning in Brooklyn's Prospect Park. (See "Urban Foraging: From the Local Park to Your Plate.") Here's what we found.