Preparation time: 30 mins
Heat the oil in a wok over a high heat. Add the chicken and quickly fry for 1-2 minutes . Add the ginger and garlic and fry for 2 minutes until softened. Add the white parts of the spring onions and stir fry for a further 2 minutes.
Add the noodles and the green parts of the spring onions and cook for a minute or so until the noodles are warmed through. Pour in the sake and bring to the boil. Let the mixture bubble for 1-2 minutes then stir in the beaten egg. Pour the in soy sauce, give everything a stir then remove from the heat. Continue to stir, off the heat, for a couple of minutes until the sauce thickens. Serve immediately.