According to your description, college students open homemade sushi stalls at school. As long as it is for external sales, it needs various certificates such as business license, personal health certificate and health qualification certificate.

Food safety is a problem that the country attaches great importance to, which is no small matter. Even if college students start a business, open a WeChat business, open an online shop or set up a stall to sell, as long as they sell homemade food, they should theoretically abide by the relevant laws and policies of the state and need to obtain certain qualification certificates.

Of course, in many places in real life, we see homemade food sold at the entrance of the community, such as stewed pig's trotters and marshmallows. Many of these mobile vendors sell without qualification certificates. But there are risks. As a college student, you also need to weigh the consequences, risks and benefits. As for you, entrusted by your friends in the dormitory, they pay for the food, and you help them cook and give them a taste. This is not an open sale.