Heat a wok or a large frying pan until it is hot then add the oil and let it get hot. Add the ginger and spring onions and stir fry quickly.
Add the scallops and stir fry for 30 seconds then add all the sauce ingredients except the sesame oil. Continue to stir fry for 4 minutes until the scallops are firm and well coated with the sauce.
Add the sesame oil and stir fry for a further minute. Serve at once with some plain rice.