This was more than 20 years ago.
A friend from the United States came to Japan with his university-age son to research the Japanese automobile industry.
During their 10-day research period, they travelled around the Kanto and Nagoya regions, and on the final day, they met up with us in Yokohama for dinner.
When I asked my friend what he wanted to eat, his son requested that he wanted to eat as much beef as he could. It was difficult to eat a lot of beef in a Japanese restaurant because it is expensive. So, we went to a restaurant near Yokohama Station that had all-you-can-eat shabu-shabu. My friend's son ate beef with single-minded devotion, and several empty plates piled up. My friend laughed as he watched his son eat.
I advised him that he should also eat vegetables, but he was so absorbed in the beef. It seems that the meat was very delicious.
Now, many customers from overseas come to eat shabu-shabu, which is very popular.
I don't know if they've got used to the Japanese eating habits of eating a good balance of meat and vegetables, but the Japanese sometimes eat root vegetables such as burdock, which are rich in dietary fibre.
We don't serve root vegetables as vegetables to people from overseas, but they are necessary for keeping your stomach in good condition.