Heat the sesame oil in a wok over a high heat and fry the aubergine for 5 mins until softened and starting to brown in places. Meanwhile, put the kettle on to boil. Cook the noodles in a pan of boiling water for a minute less than the pack instructions, then drain and rinse under cold running water to stop the cooking process.

Add the five-spice powder, garlic and Sichuan pepper to the pan with the aubergine and stir-fry for 1 min.

Mix the tahini, hoisin, soy, vinegar and chilli oil together in a bowl. Stir in 50ml hot water from the kettle, then pour the mixture over the aubergine and cook for another 1-2 mins until coated in the glossy sauce. Add the noodles and toss to coat, adding a splash more hot water if the sauce is too thick. Sprinkle with the spring onions and sesame seeds just before serving.