The dutch oven offers you the opportunity to cook outside with charcoal. If you are comfortable with this type of cooking 15 minutes before you are ready to bake the cake you need to start your charcoal. The best charcoal out there by far is Kingsford Charcoal. Its easy and fast to light and burns longer than any other brand I've seen. I use a 14" dutch oven for this cake so you will need 30-40 pieces of charcoal. You can use lighter fluid or crinkled up newspaper under a heavy wire basket to light the charcoal. I'll come back to the charcoal later.
If you prefer not to use charcoal or you do not have a dutch oven you can easily use a conventional oven and a pan at least 14" diameter and 4" deep. Preheat the oven to 350 degrees at this point.
Um the best part is that it's chocolate cooked over an open fire!!
Awesome, look delicious :D