Hi all I dont know sins but blue dragon chop seuy is lowest cals ive found .Have you tried to make your own .chicken boullion /stock soy sauce couple of table spoons and oyster sauce 2/3 table spoons cornflour to thicken I then freeze it in ice cube trays .the quantites are approx as to your taste .Just throw cubes in near end of cooking or defrost 3 or so and add at end depends how long you cook stir fry hope this helps