Here's a way to have pizzas and loaves baked in your backyard. You can build your own mud oven — they are surprisingly easy to make. The main ingredients are sand, clay and water. Here are some
instructions for constructing the mud oven seen above. See these step-by-step photos: Part 2. Here are some tips on make your oven more efficient. Here's a book on building an earth oven. Thanks to Kathreen and Rob for the tip.