We launch a new "On Second Thought" series called “Main Ingredient” in which a chef tells us about his or her essential Southern ingredient. Host Virginia Prescott heads into the kitchen with Atlanta-based chef and cookbook author, Todd Richards . He shares with us his love for collard greens. "Bacon, Collard and Fried Egg Sandwich" by Todd Richards Poached, soft-scrambled, or fried—egg dishes are an essential part of a chef’s repertoire. Cooking eggs correctly requires organizational skill,