SusieGee wrote:The thing is though Mike I don't usually stick my casserole dishes in a fire pit, so I was hoping for some hints on controlling temperatures, best fuel to use etc etc
Well, assuming that you really do want to put it in a firepit, temperature control is achieved by moving it. But then you shouldn't be putting it over a roaring inferno - the best situation is over glowing coals. The whole point of a Dutch oven (and a casserole) is get it hot and keep it hot for a long time. Cast iron does this by its very nature - it takes for ever to cool down.
The best fuel (if you're outside) for doing this is charcoal. However, a wood fire which is fed judiciously and regularly will do the job. The down side is that while you're tending the fire, everyone else is having fun and getting pissed. Each to their own, though.
An alternative is to get the thing damned hot, then remove it from the fire and pack it in straw and leave it for an hour or two.
Mike