FWx Labs continues its careful study of the Searzall, the soon-to-be-available device that turns the flame from an ordinary torch into a fearsome pane of fire. Here, FWx's editor-scientists apply the Searzall to a piece a teriyaki-glazed salmon sushi purchased from Duane Reade, resulting in a crackly bubbling crust. What's happening here is caramelization. As the flame heats the teriyaki sauce, its sugar molecules go crazy, breaking apart and forming new, browner and more caramelly-flavored molecules. Watch science in action.