Overview: The Improbable Grill: In this show we explore three unexpected techniques for grilling. The first stands the vertical rotisserie used in Mexico and the Middle East. The second involves a piece of equipment you don’t usually find at a barbecue—a roofer’s torch. The third involves a mystery ingredient that virtually no one on the planet has ever grilled. Tacos Al Pastor, Volcano Pineapple, Mystery Box - Sunflower.