Nagano Prefecture encourages young people to learn how to catch and cook traditional insects to save its old custom. These insects are caddisflies and stoneflies larvae, also known as Zaza. Because of the decreasing number of licensed catchers, serving insects food also reduced. Thus, local authorities arranged an activity to promote their local insect food. High school students participated in the activity that took place in January 2019. According to one of the students, the insect food was crispy and it tasted like shrimp. The officials of Ina City and Nagano Prefecture plan to continue promoting their traditional insect food in Tokyo.