Smoke signals lead Roger Mooking to two popular food trucks in Texas serving up delicious ethnic eats. In Grapevine, Texas, Roger meets pitmaster Trey Sanchez of Vaqueros Texas Bar-B-Q, who's known for combining authentic Texas-style barbecue with Mexican dishes. Roger and Trey season and smoke briskets for Birria Tacos and prep Cowboy Potatoes for a pop-up with hungry locals at Hop and Sting Brewing Co.