Add a piece of kelp and 2-3 mushrooms to 700ml of water

Cut the onion into slices

Fry onions for 5-7 minutes, then add dashi and sake and bring to a boil

Cook for 5 minutes, then turn off the heat and add 2 curry cubes

Add soy sauce and simmer simmer over medium heat for 5 minutes

Add udon and done!