What’s your guilty pleasure? If you have one, it’s likely to do with food. But why do you feel guilty? From health or ethical issues? On the brink of this season of pleasure, with Valentines Day, Fat Thursday, and Mardi Gras, we’re joined by Louisa Chu, co-host of Chewing the Fat, our WBEZ podcast on food, that explores pleasure this week. (Flickr/stitch)