In the bottom of a large jar with a lid, mix together the liquid stock, soy sauce, miso paste and rice vinegar.
Layer in the noodles, bok choi, mushrooms, carrot, spring onions and coriander.Seal the jar with a lid and store in the fridge for up to 5 days.
When you are ready for a quick and easy meal, remove the jar from the fridge.Boil the kettle.
Carefully pour in 1 cup of boiling water until all the ingredients are covered.Briefly stir and leave to stand for 5 minutes and then stir everything together well.
Top with some sesame seeds and add a little dash of your favourite Asian hot sauce if desired.Enjoy!