Use these step-by-step instructions to build a rustic outdoor oven
10. Working from the base up, pack the adobe-cement mixture firmly over and through the layers of mesh, leaving no air pockets. Pack mixture around the can, wiggling and rotating it to keep it from being trapped in place. Form arch for door by squeezing mixture into the chicken wire, and periodically inserting the door (with flashing attached) to check fit. Continue adding mixture until the coat is 4 to 5 inches thick overall. Let it dry slightly, then smooth the surface with a damp sponge and a wood "float" made with scrap lumber.