Cook the potatoes for about 5 minutes in salted boiling water and drain.
Place a frying pan over a medium heat.
Pop the rump steak into a bowl with the soy sauce, sesame oil and garlic, mx well.
In a wok or large frying pan heat the ground nut oil and sesame oil over high heat, add the potatoes, carrot, spring onions and cabbage, cook for a couple of minutes. Add the chilli, garlic, coriander and mint. Turn the heat off. Ideally you want to have a crunch in the vegetables.
Cook the steaks for 2-3 minutes on both sides and rest for 2 minutes before slicing.
Place the wok fried vegetables on to plates, slice the steak, arrange the sliced steak over the stir fry and finish with a sprinkling of sesame seeds and if you have any coriander left sprinkle a little over.
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