Mix the lamb strips with 1 tbsp oyster sauce and leave to marinate while preparing the rest of the dish.
Bring 2 litres of water to the boil with a pinch of salt and cook the fresh udon noodles for 30 seconds. Once drained, toss with the sesame oil.
Blanch the carrots and broccoli florets separately. This will keep them firm and crunchy.Toast the Sichuan peppercorns for 2 minutes over a medium-high heat and add the cumin seeds until they just start to smoke and are fragrant.Let them cool before grinding them to a fine powder.
Stir fry the noodles
Heat vegetable oil over a high heat and stir fry the lamb strips with the onions for 2-3 minutes.
Add the garlic, ginger, spices and dried chilli, and stir fry for 30 seconds.
Add the udon noodles, carrots, broccoli florets, 1 tbsp oyster sauce and soy sauce and stir fry for 1-2 minutes. If the noodles are dry, add a little hot water until well combined and the noodles are well coated. Season to taste.
Notes
Any vegetables such as fresh peppers, bamboo shoots and spring onions can be added.