The further you get from a country, the worse its food tastes. Maybe it’s because the further you get, the less likely you are to have your food cooked by a native cook. Possibly the same fresh regional ingredients are impossible to come by in other parts of the world so the meal could never taste the same. The best place to eat sushi is in Japan, cooked by Japanese chefs with Japanese ingredients. The worst place would be in Brazil, cooked by Brazilian chefs with Brazilian ingredients.