Masuzushi
Masuzushi is a kind of Japanese ekiben boxed meal sold on trains and train stations in Japan. It is a type of oshizushi (pressed sushi) and a well-known souvenir of Toyama. Masuzushi is made of vinegared trout sashimi on top of vinegared rice and wrapped in bamboo leaves.
Source: Wikipedia
Recipes
Masuzushi: Toyama's Trout Sushi Wrapped in Bamboo Leaves - Recommendation of Unique Japanese Products and Culture
Now, here in Japan, we have the Buddhist festival called “Obon (お盆)”, during which it is believed that our ancestral spirits return home. So we usually go and visit our ancestors’ graves during the period.....