This is not your ordinary hamburger! If you like hamburgers and you love Gyro sandwiches, then you may enjoy this combination of those two ideas. Adapted from "365 Ways to Cook Hamburger." I borrowed this cookbook from a local library and copied out this tasty recipe. Purists beware - this is not pretending to be an authentic recipe from any particular culture, but is merely influenced by the flavors & style of Greek cuisine. Prep is about 15 minutes plus 2 hours chilling time. Cook time is a guess and varies based on how thik you make each patty - also, even though the original suggested 4 huge patties, you can certainly make smaller ones and just cook them for a little less time. You can broil these if you prefer.