 Cooking over an open flame was probably the first form of cooking, but practitioners of the low and slow method know that it's a combination of instinct and science. Gas versus charcoal. Rubs versus marinades. Barbecue versus grilling. What's your favorite? Make for some great backyard debate for you spatula jockeys. Our next guest is here to chew the fat over great grilling tips and bust up a few barbecue myths.