What's your favorite comfort food for a winter weekend? A lot of people would quickly mention mac-and-cheese. Others might favor a stew, soup or savory pasta dish. On this weekend episode: John Shields, of Gertrude's restaurant in Baltimore, offers a comforting potato dish from his ancestral home in Ireland, while Henry Hong, the Food Nerd, suggests a chicken casserole passed down from his wife's grandmother. Dan offers polenta and minestrone.Links:http://www.baltimoresun.com/news/maryland/dan-rodricks-blog/bs-md-rodricks-0126-story.html