I know a guy who might be interested. We would need some instruction. Would Loco Moco gravy do, or does the sauce start sliding toward teriyaki glaze? I presume the gravy is not running off the edge, as it would be difficult to eat. The gravy is thicker, perhaps, like a cream sauce? Does the sandwich come with lettuce, tomato, onion, or any other complement? It's the same gravy as a Loco, cook the burger on the grill ,like you would any other burger , Dip in brown gravy when done and put on bun. ... i'm not sure of it's origin... but it's so ono.