I’ve found you can learn a lot about a country by what they have at McDonald’s. Every different country has their own special things. One example is on my recent trip to China the had spicy schezuan chicken burgers. In Japan they also have their own special stuff, such as the new “Cheese Katsu (Fried Pork Cutlet) Burger” (which I have tried and yes it is delicious).
Other favourites in Japan are the “McTeriyaki Burger” and the “Fried Shrimp Burger”, also very delicious!