To prepare a sweet and sour pork III recipe, you'll need: 1 pound pork tenderloin, 2 tablespoons soy sauce, 1 tablespoon sugar, and 1 teaspoon ground cumin. Cut the pork into 1/4-inch cubes. Heat the oil over medium-high heat. Add the onion and cook until softened, about 5 minutes. Stir in the garlic. Cook, stirring occasionally, until the onions are translucent, 3 to 4 minutes, scraping up any browned bits from the bottom of the pan. Remove from heat and add the vinegar. Simmer, uncovered, for 1 to 2 hours, or until pork is no longer pink. Serve with rice.