it's this oven dish kinda thing that looks exactly like a sombrero with a hole in the top. you stick a whole chicken on the middle part, throw it in the oven, and the heat from the oven goes up into the chicken, cooking it faster and more evenly. the guy put patatoes in the bottom rim part of the hat and the juices from the chicken dripped down the cone part onto the patatos. it looked delicious. he used the same ingredients you mentioned, so i thought you might have seen it. i can't find a link to the cooking sombrero and my time limit for looking for things like that is 90 seconds, so...