The Japanese answer to schnitzel is one of the most popular dishes in Japan. This secret to the perfect tonkatsu was taught to me by the chef at my favourite tonkatsu place in Tokyo when I lived there. Dip the pork cutlet in a double coating of flour before covering in the breadcrumbs. It gives you a thicker,crisper coating and tender pork. You can buy bottled tonkatsu sauce at Asian supermarkets,but it's easy enough to make yourself.