Chef Ryan Poli of the soon-to-open Tavernita in Chicago became interested in vegan cooking because his girlfriend follows a mostly vegan diet. "It was difficult to cook for her at home," he says. "I couldn't just open the fridge and make something. I had to really think." This relatively simple dish of grilled polenta and radicchio proves it's possible to create something deeply delicious, substantial and vegan with just a handful of ingredients.