Sandra, I made it this weekend and it was terrific. No extra fat was needed, there was plenty
marbled in with the shoulder cut I used. I had to get rid of quite a bit of fat when I broke up the meat before baking. I did rub the pan with a bit of butter, just to keep it from sticking too much, but I liked picking at the browned bits that did stick. I did find the coriander seed, finally.