Cook the potatoes in salted boiling water for 2-3 minutes, drain and leave to cool.
Heat a wok over a high heat. Add the oils, fry the chicken until it starts to colour. Add the garlic, chilli, ginger and continue cooking for a couple more minutes, stirring as the chicken is cooking.
Add the egg and scramble into the chicken. Add the potatoes and beansprouts and again continue to fry giving the dish a good old toss so all the ingredients are mixed up.
Just before serving add the spring onions, soy, fish sauce if using and give one last toss before tipping onto a plate. Garnish with chopped coriander and peanuts.
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