Years ago my mother got a this recipe with from a bottle of soy sauce. This receipe has more to my mother's. there is gengerroot and mushrooms. After making this for the 1st time she change some things. She used dry vermouth not sherry and then to make more sauce she poured soy sauce that was used to marinate the chicken into the water, 2 table soy sauce, sugar and cornstarch to measure a one cup measure. Then cooked the sauce until thickened and put the chicken back into the pan and mix until coated and served over cook rice. So easy and good,.