Pork with chestnuts

3 (5 ounce) cans water chestnuts , drained and chopped 1 1/2 cups finely chopped scallions 3 lbs lean ground pork 2 teaspoons salt 1 tablespoon soy sauce 4[...]

1 large yellow onion , chopped 1 tart apple , peeled, cored, and chopped in 1-inch pieces 1 (8 ounce) can water chestnuts , drained & cut in half 1 1/2 lbs[...]