I'm looking for a recipe for those marvelous "panko breading crumbs" that are used for deep frying shrimp and chicken and etc, often in chinese or japanese restaurants. The package of "panko crumbs" is SO expensive and surely it's not that difficult to make. I've heard that perhaps it's some type of potato flake, but it seems more likely to be a rice flake. If so, where do I get it or how do I make it?