1. Wash the potatoes, peel them, steam them, and roll them into a puree
2. Add milk, salt and black pepper and stir well,
3. Add cornstarch and stir well
4. Cut the two kinds of cheese into fine pieces and set aside
5. Add the shredded cheese to the potato dough and wrap it into balls
6. Oven, middle level, upper and lower fire, 200 degrees, 30 minutes.
