The most authentic use for panko breadcrumbs is a Japanese pork tonkotsu, which is a schnitzel-like dish dating back to the latter part of the nineteenth century.
There's no need for chefs to limit the use of panko to Japanese recipes. Such is their popularity, the breadcrumbs are now exported to kitchens all over the world, where they're used for everything from haddock croquettes to pork escalopes.
When using panko breadcrumbs to bread food, first create a nice dry surface on the item being breadcrumbed by dusting it in seasoned flour. Next, dunk it in a shallow bowl filled with lightly-whisked egg. Finally, roll it in the breadcrumbs. For the best texture, deep fry, or at least pan-fry with a generous amount of oil or butter to ensure that the panko breadcrumbs become crisp.