>I forgot to say this sounds really unpleasant to me. I might grease a metal hinge but I certainly wouldn't want it near my food! (We would let the fat drip through)

obviously, with one of those flat grills shown in the above links, there's no place for fat to drip. hamburgers and the like do fry in their own grease; excess grease is scraped with a spatula into a channel in front or back of the grill (but usually after the meat is done grilling).

joe (I was not a fry cook, but I worked the other side of a large plate glass window from one] friday