A clay oven is like a very special kind of oven that people have been using for thousands of years. It's made out of clay, which is a kind of mud that gets hard when it's baked in the sun or an oven. To make a clay oven, people take big chunks of clay and shape them into a sort of dome or circle. They put the clay on top of something to hold it up, like bricks or stones.
Once the clay is shaped right, people light a fire inside the oven to bake it and make it hard. Then they let the oven cool down and take out the ashes. Now the oven is ready to use! To cook food in a clay oven, you usually build a fire inside it and let it get really hot, and then you put your food inside. The clay stays hot for a long time, so it cooks the food really well.
People use clay ovens to make all kinds of yummy food like pizza, bread, and even roasted meat. Some people also think that food cooked in a clay oven tastes extra good because the clay adds flavor. It's a very special kind of oven that people have been using for thousands of years all over the world!