The Pizza Bella oven was manufactured and sold in the early 2000's in the U.S. by small-appliance-maker Deni. It's since been discontinued but is available used on eBay and elsewhere. It's a subject of interested among at-home pizza-makers because it purports to solve a problem inherent in cooking pizza in a home oven — namely that the crust always cooks faster than the top of the pizza. Here, a powerful heating element in the top of the machine is supposed to cook the top quickly. We put our new machine to the test.