Heat 4 tbsps. sesame oil and fry the chicken to a red colour, add all the vegetables with the exception of spinach, fry for a few minutes then cover tightly and cook till the vegetables are almost done.
Pour in the stock and add spinach and ajinomotto and cook for 5 mins.
Then add cornstarch made into a thin paste with little water.
Cook till soup turns little thick, mix in the egg and stir quickly for 1 minute.