Mix together all of the marinade ingredients in a large bowl and add the beef.
Add the oil to the wok and heat until smoking.
Add the beef and quickly stir-fry for 2 minutes.
Drain the beef into a colander to get rid of the oil.
Put the wok back on the heat and add the onions followed by the beef stock and the mushrooms stir-fry until the onions are starting to soften and the mushrooms are cooked through.
Add in the chilli flakes, sugar and soy sauce and cook for a minute more.
Add in the gherkins.
Return the beef to the pan and add the chives.
Add sesame oil and stir well to combine.
Serve with the noodles
Trending This Week