I have to admit that I do a lot of my cooking on the Cadac, roasting, baking you name it and I've probably done it, but my advantage is before I retired I was a head chef at a 4 star hotel. My Cadac is over 20yrs old and the way I use it to roast is flame diffuser and BBQ grill mesh, the diffuser spreads the heat rather than the direct flame, the lid to mine isn't the solid type but has vents all around it so I use a large piece of foil pushed over the handle and pulled over the vents. With a chicken as already mentioned I also spatchcock it, this reduces the height letting the lid fit properly, I also use a oven thermometer to keep a better check on the temperature and I also use a probe to check the meat temperature this is a throw back to filling all the food safety reports that we used to have to do.