Frontera Red Chile Barbacoa Slow Cook Sauce Comes From The Kitchen Of Award-Winning Chef, Author And Television Cooking Show Host Rick Bayless. Barbacoa, Chile-Marinated Pit-Roasted Meat, Is Beloved Throughout Mexico For Its Rich, Tender, Goodness. At Home, Our Blend Transforms Beef Chuck Roast Into Beautiful Barbacoa--No Pit Needed. This Sauce Comes In An 8 Oz. Pouch.