I've missed the wood-fired horno since I left New Mexico, and decided I'd build one here anyway. I've got 12" of topsoil, 8" of sand under that and lots of clay underneath it, so material comes from the property. It's just a matter of digging it out, mixing it up and building the oven.
I had some adobe lessons while I was in New Mexico, so I know the basics.
I've cooked in several types of wood ovens over the years, but the best bread I ever baked was out of a mud-brick horno.
/johnny