I'm always fascinated by the food cultures that arise on national borders. Consider that fusion of Texas barbecue and Mexican spice we call Tex-Mex. In today's show, we explore how American barbecue techniques can enhance three classic Mexican dishes: snapper en pipian, in a grilled vegetable and pumpkin seed sauce; pork shoulder pibil, smoke-roasted in banana leaves in the style of the Yucatan, and a Project Fire first: a dessert quesadilla lavished with bananas and dulce de leche. Today on Project Fire, Tex meets Mex on the grill.