Put the noodles in a bowl and cover with boiling water. Set aside to soften.

Meanwhile, heat the oil in a wok and stir-fry the ginger, pepper and leek for a few mins until softened. Add the garlic and paprika and cook for 1 min more. Drain the noodles, reserve 2 tbsp of the water and mix with the miso.

Add the drained noodles, miso liquid, beansprouts, peas and spinach to the wok and toss over a high heat until the spinach wilts. While you are doing this, fry the eggs in a little oil to your liking. Pile the noodles onto plates, top with the eggs and chilli, if using, and serve.