
The critical factor in making light sourdoughs was calculating how many coals were placed below and above the oven. Here's an easy calculation when cooking with a Dutch oven. Figure 2 coals per inch of oven diameter. Then place 2 more coals than the oven size on the lid, and place 2 less than the oven size under it.
So if you are cooking in a 12-inch oven, you use a total of 24 coals. For the number of coals underneath, you would subtract 2 from 12 for 10 coals and on top: 12+2 for 14 coals.
Mike Kearby's Texas Copyright 2012