To prepare the sweet sour meatballs oriental beef recipe, you'll need: 1 pound ground beef, 2 tablespoons kosher salt, 1 teaspoon ground black pepper, and 1 tablespoon ground cumin. In a large bowl, mix together the flour, cornmeal, baking powder, salt and nutmeg. Add the beef mixture to the dry ingredients and mix well. Form the mixture into 1 inch (2.5 cm) balls and roll them in the bread crumbs. Place the meat balls in an oven-proof dish and bake for 20 minutes. Remove from the oven and let sit for 5 minutes before serving.