I have occasionally done this when camping - sourdough, english muffins,
sourdough cheese biscuits [ with a touch of garlic, of course].
biscuits can be cooked/griled/baked in a heavy fry pan or griddle; need to
adjust the height /or fire to control the heat.
baking bread requires a little more watchfulness. I usually use a cast
iron dutch oven [lined with aluminum foil - easy to remove, especially if
it accidentilly gets too hot on the bottom. You put some of the fire coals
around [and on top] of the durch oven ; sort of guess how much it takes. [
there are "formulas" of temperature and time if you use bricquets [ that
spelling doesn't look right - and I can't check on the bag as I don't use
them] . One time I used my foil lined cardboard 'solar oven' box as a
enclosure - and it worked very well. [of course it also caught fire one
time also!!
Any technique that is intended for barbeque [ slow, lower heat, as opposed
to grilling - fast, high heat] should work very well for baking. After
all, people were baking bread for thousandds of years before all our
'modern appliances'- and in many parts of the world they stilll do!
Tom brown, the crazy camp cook