"Eat your veggies" - it's a line children from Mexico to Morocco hear from their parents. In this episode, we meet a pair of chefs who took that advice seriously. As Rick discovers, chefs Israel Montero and Alfredo Chaves of Kaah Siis Restaurant aren't just eating their vegetables, nor just cooking them - they're growing them at Xochimilco, Mexico City's ancient floating gardens. The chefs give Rick a tour of the chinampas, small man-made islands amongst the canals, where some of the city's chefs are growing organic and specialty produce. They talk about sustainability, the future of organic, and, of course, kale. Back in Chicago, Rick takes us to the closest thing he has to Xochimilco: Green City Market, where he visits his favorite vendors and takes their wares home for a taco party.