Heat up the oil in a pan set over a high heat.
.Chop the spring onions, peel and chop the garlic.
Add the chopped spring onion, half of the garlic and ginger puree to the pan and stir fry them for 30 seconds to release their flavour.
Add the mushrooms cut into quarter or half, and give everything a good stir.
Leave the mushrooms to cook until all their liquid has been absorbed and they star to turn a golden brown colour.
Add the cubed pork to the pan and stir fry it for 1-2 minutes.
To make the stir fry sauce, combine the soy sauces, sesame oil, sugar, rice vinegar, the remaining garlic and chilli flakes.
Add the sauce to the pan, and pour over the chicken stock.
Leave it to cook for 2 minutes, then make a slurry from the cornflour and 2 tablepsoons of cold water.
Pour the mixture over the rest of the ingredients, and stri it well for 1 minute for the sauce to thicken.
Garnish it with chopped parsley and remove it from the heat.