Cut vegetables: Cut them into bite-size pieces or any size of your choice
Cook vegetables: Heat the pan over medium heat, pour some oil, stir fry onions until a bit tender. Add kabocha, sweet potatoes, and carrots, and stir fry a little more.
Cover: Add napa cabbage, green peas, salt, 50ml water, cover the lid.
Simmer: When the smoke comes out, lower the heat to low and simmer for 7 minutes.
Add water and soy milk: Open the lid, add 400ml water and soy milk, warm it up until just before boiling over medium heat.
Add miso paste: Turn off the heat, add the miso paste, and gently stir until it dissolves.