Freeze steak 1 hour to make cutting easier. Heat oil in skillet, add garlic, salt, ginger and pepper. Sauté until garlic is golden. Add steak which has been cut in 1/4" strips and brown lightly. Remove meat. Add green peppers and onions and cook 3 to 5 minutes. Return beef to pan and add soy sauce, sugar, bouillon, water chestnuts, cornstarch dissolved in water and green onions. Simmer for 15 - 20 minutes. Serve over rice. Chinese noodles may also be added.