Good food is the spice of life, and we're adding a little kick with our flavor-filled favorites! Jeff Mauro takes us to Chicago for 23 mole sauces, and Donal Skehan will have you sweating as he attacks the hottest taco in Los Angeles. Aaron Sanchez talks about his beloved barbecue with a surprise twist, while Duff Goldman's intricate 16-spice favorite is a can't-miss dish in New York.