Yep! That is the pizza oven design. I found out that I could smoke food by making it a box. Once I get it insulated I am going to try to bake.
Here, I will embarrass myself and post my first oven. I am an Alton Brown fan that took his idea and put my broke ass spin on it.
But if there is ever a natural disaster or zombie attack, then I know I can always smoke pork loin ribs in a pinch
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My oven for the winter will be larger, like the pizza oven.
My personal preference leans towards rocket stove cooking. Long term I am putting a rocket stove in a traditional brick oven. I find the open stove cooking too messy, takes too much time, and wastes too much wood for my tastes. Open fire pits are fun but I would never cook over one now unless I absolutely had to.