Sea food
You may be thinking of sushi, but there are many other Japanese dishes that must be eaten fresh.
Not that popular but it is eaten here.
I dont really know
"Fresh" in Japanese katakana is written like: フレッシ
Several fresh fruits and vegetables can be eaten raw. These include anything from tomatoes to apples.
Some popular Japanese foods in the US include sushi, ramen, yakisoba, and donburi.
candyfloss, chocolate banana,takoyaki are some.
Rice is one food that is eaten daily by the Japanese. Other common foods include broths, and vegetables. Meat portions are small.
Chopsticks with Japanese food; some foreign foods are eaten with western cutlery also...
All types of food can be eaten in space. Chinese, Japanese etc are all flavors available.
Preserve food by inhibiting growth of bacteria/mold/fungus. Its for food that needs to store for long period of time, or are not eaten immediately, or have low chances of being eaten. Stay fresh and last longer than unpreserved food.