Cut the beef across the grain into slices about 1 by 1-1/2 inches and 1/5 inch thick. Put into a bowl. Prepare the marinade: Add salt, sugar, soy sauce, pepper, wine or sherry, potato flour and water to the beef. Stir until well coated. Let marinate for 15 to 30 minutes. Blend in the oil. Cut the Chinese broccoli into pieces about 3 or 4 inches long. Prepare the sauce: Mix together the potato flour, water, oyster sauce and soy sauce. Heat a wok until hot. Add 1-1/2 to 2 tablespoons of the oil and swirl it around. Add the ginger, stir. Add the Chinese broccoli. Sliding the wok scoop or metal spatula to the bottom of the wok, turn and toss in rapid succession for about 1 minute, adjusting the heat if the broccoli begins to burn. Add the salt and sugar. Now add 4 or 5 tablespoons of water, bring to a boil, continue to cook, covered, over moderate heat for about 4 to 5 minutes. The broccoli should be tender yet crunchy. Transfer with a perforated spoon to a warm serving plate and keep warm. Wash and dry the wok. Reheat over high heat until smoke rises. Add the remaining oil and swirl it around. Add the garlic, then stir in the white scallions. Add the beef and turn and toss for about 30 seconds to brown. Splash in the wine or sherry around the side of the wok, continuing to stir as it sizzles. Add the well stirred sauce to the wok. Toss and stir as the sauce thickens. Add the green scallions and remove from the heat. Scoop the beef mixture over the Chinese broccoli. Serve immediately.
Cajun Country -- New Iberia, Louisiana