It is estimated that there are more than 13,000 supposedly Japanese restaurants in Europe.
Unfortunately, most restaurants only offer low-quality dishes that claim to follow the example of Japanese cuisine.
On the other hand, more and more European chefs and owners of the Japanese restaurants are seriously studying Japanese cuisine and inventing new Japanese dishes that suit European tastes.
However, I listed restaurants run by Japanese or Japanese chefs first. Additionally, I've added restaurants run by chefs trained in Japanese gastronomy.
The definition of "authentic" is not entirely clear. But people who have been to Japan will certainly feel a little longing for Japan in the restaurants listed here... ... apart from the price.