In a large skillet, saute 1/4 cup onions and ginger in canola oil until tender. Add garlic; cook 1 minute longer. Add pork; cook until juices run clear. Drain.
Stir in the water chestnuts, soy sauce, sesame oil and pepper flakes. Add noodles and water. Bring to a boil. Reduce heat; cover and simmer for 5-7 minutes or until noodles are tender. Sprinkle with remaining onions. Yield: 3 cups.