Cut the meat, across the grain, into 5cm wide pieces, and then cut each piece into wafer-thin strips. Place in a small bowl with the cornflour and five-spice powder. Mix together well to coat the meat.
2.
Cut the carrot and leek into 5cm lengths, then cut each piece into fine matchsticks. Put all the prepared vegetables together in a bowl.
3.
Soak the noodles in a bowl of lightly salted, boiling water for 3 minutes. Drain and refresh in cold water, then drain again. Combine the soy sauce, sherry and 2 tbsp water in a small jug or bowl.
4.
Place a wok or a large frying pan over a high heat. When hot, add 1 tbsp of the oil, then when it is just smoking, toss in the meat and stir-fry for 2–3 minutes until cooked through. Remove with a draining spoon. Add the remaining oil with the garlic, ginger and chilli. Stir-fry for 30 seconds, then add the vegetables and toss these around for another 30 seconds.
5.
Stir in the soy sauce mixture and as soon as the liquid is bubbling, mix in the drained noodles and finally the meat. Serve immediately, with extra soy sauce to sprinkle.
COOK SMART
*For a stir-fry, it is important to have all the ingredients ready prepared before you start cooking. It then takes just minutes to toss everything together over a high heat. *Prime beef steak is relatively expensive but you only use a small quantity in this stir-fry. Rib-eye steak is terrific value compared to fillet and even rump.