I used to make an oven in the field simply by digging a hole and lining it with rocks. Place food such as potatoes wrapped in tin foil into the hole surrounded by hot coals from the camp fire. Cover with the soil and wait a half an hour. Dig them up and eat. No mess no fuss, but one needs a fire is the only drawback. I used to amaze my friends using this technique. They didn’t believe it would work.

Howie