Tim Barker and Joel Meadows take you through a step-by-step guide to building an extremely cheap, rocket powered oven using easy to access materials such as bricks, clay and reclaimed steel barrels. These designs may not quite have the domed top elegance that has made the backyard cob pizza oven so trendy, but they do have a farm yard charm of their own. And rather than taking hours to heat up to cook a couple of pizzas (often only used once a year!), these are super efficient, and very practica