What is the most memorable snack in the snack street next to the university?

My favorite snack in the snack street next to the university is "lean meatballs". I remember there was an old woman who stood a stall in the snack street next to the school. At that time, I would go to her stall every afternoon to buy a bowl of lean meatballs to satisfy my taste buds and at the same time be full. Because I often come to buy lean meat meatballs, my grandmother knows me, so she often doesn't want my money, but I will still give her some money. Later, she said that she would leave here and stop setting up stalls. Because his wife was in hospital, I was confused at that time, and then I gave her 200 yuan. Grandma refused at first, but then I insisted on eating, and when I left, she taught me how to make lean meat pills. Although I can make lean meat balls, the taste is still not as good as that grandma's. Time passed and I graduated. Now I don't know what happened to that old woman and her wife. I hope they can stay healthy in their old age.