This is a great recipe when you are starting to learn to bake in a Dutch Oven. The recipe is simple and you can focus on controlling the heat while camping.
Using charcoal briquettes to heat a Dutch oven is a consistent way to get an even temperature. This guide gives the typical ratio of briquettes...
10" DO | 190 deg C | Top 16 | Bottom 7
12" DO | 190 deg C | Top 18 | Bottom 9
14" DO | 190 deg C | Top 22 | Bottom 12
This amount however can change with environmental conditions such as wind, humidity and altitude.