Slice the Beef thinly. Freezing the meat for an hour will help the meat firm up and makes it easy to slice
Marinate with the soya sauce, sesame oil, cooking wine and baking soda and leave aside for 10 mins
In the meantime combine all the sauce ingredients in a bowl
Dip each piece in cornstarch, shake off the excess and deep fry in batches and keep aside
Once everything is fried, fry the pieces again for the second time
In a wok add the sesame oil, the spring onions, garlic, julienne of ginger and the green chillies
Saute this for a minute and add the sauce ingredients and allow this to thicken a bit
Add the beef and toss to coat and serve