As has been said by many others, use coals not flames to cook. You never cook over the main fire because you cannot control your heat that way. Place your cooking utensil, pot, grill or whatever, off to one side of the main fire and rake coals under it to cook. You control your heat by adding coals or removing coals. When I have cooked a chicken over coals, I have both a grill and a wire basket to put my chicken in. I either cut up the chicken into parts or cut it down the back and lay it out flat. It is easier to evenly cook a piece of meat if it is not so thick. Try to make the meat, chicken or whatever a more even thickness and it will cook more evenly. When cooking steaks, how much heat you need will depend on how you want your meat cooked. If you like it blood raw in the middle like my wife did, you use more heat and sear the steak on the outside and just enough heat penetrates to the middle to gently warm it. On the other hand, if you prefer your steak well done, you need to cook it more slowly so that the heat penetrates to the center without burning the outside. It is all about using coals, adding or taking away to control the heat.