Step 1

Peel and chop the onion and ginger finely, then chop the white end of the spring onion.

Step 2

Heat up the oil in a pan, add the garlic, onion and ginger and stir for 10-15 seconds.

Step 3

Slice up the mushrooms and add them to the pan.

Step 4

Stir for a further 10 seconds, add  water and leave to boil for 5-10 minutes until the mushrooms are tender.

Step 5

Meantime, cook the noodle according to the package instructions, udon noodles usually need about 5 minutes to be ready.

Step 6

Drain the water and transfer the noodles to a bowl.

Step 7

When the mushrooms are ready, mix in the miso paste and remove the pan from the heat.

Step 8

Add the soup to the bowl and garnish with the remaining spring onion.

Step 9

Serve immediately.