MINCE ginger in garlic press; In a medium bowl, COMBINE ginger with sherry and salt; ADD pork cubes; SET aside for 30 minutes.
In a skillet, heat vegetable oil until hot (375F); ADD marinated pork cubes; STIR-FRY until pork is done (no longer pink in color); DRAIN on paper towels; SET aside.
COOK sauce over medium heat, STIRRING, until sauce boils and thickens.
STIR in pepper, pineapple, waterchestnuts and green onions; REDUCE heat to low; COOK for one minute.
STIR together cornstarch and water; in a medium saucepan, COMBINE cornstarch mixture, garlic, vinegar, sugar, ketchup, soy sauce and chili oil; SET aside.
Arrange pork cubes on platter; pour sauce and vegetables over pork; serve hot with rice.
Per Serving (excluding unknown items): 291 Calories; 8g Fat (23.8% calories from fat); 14g Protein; 42g Carbohydrate; 1g Dietary Fiber; 33mg Cholesterol; 684mg Sodium. Exchanges: 0 Grain(Starch); 2 Lean Meat; 1/2 Vegetable; 1/2 Fruit; 1 Fat; 2 Other Carbohydrates.