50 Spring/Egg Roll Wrappers (about 2 packages), defrosted unopened at room temperature for 45 minutes or in the refrigerator overnight
1 tablespoon cornstarch (or flour) mixed with ¼ cup of cool water
Oil, for fryingFOR THE GROUND PORK
1 pound ground pork
1 tablespoon soy sauce
1 teaspoon cornstarch
1/4 teaspoon sugar
freshly ground black pepperFOR THE VEGETABLES
2 to 3 cloves garlic, very finely minced
½ head of cabbage (about 11 ounces)
3 carrots, shredded
1 teaspoon grated fresh ginger
10 fresh shiitake mushrooms (or dried black mushrooms soaked overnight), stems discarded
1 tablespoon cooking oil (canola, vegetable, peanut)
1 tablespoon Chinese rice wine
1 tablespoon soy sauce
1/4 teaspoon sugar
1/2 teaspoon salt
1 teaspoon sesame oil
Freshly ground black pepper