Mix the hot bean sauce, sherry, and broth (or water) in a cup and set aside. Take a plate and line with paper towels. This will be used to drain the string beans after dry-frying. Heat oil in wok until nearly at the smoking point. Add string beans and fry briefly, until they begin to wrinkle. Remove to plate. Pour off all but 3 T of the oil. Add garlic and gingerroot; saute until fragrant. Now add the turkey and fry until cooked. Return the string beans to the wok, toss a few times to mix, then add the reserved sauce mixture. Continue to stir-fry until the sauce is no longer liquid and clings to the string beans. May be served warm or at room temperature.