Boiled soybeans

Soak the soybeans in plenty of water and leave them overnight. Drain the water and steam in a steamer for about an hour until they are firm enough to be crushed when pressed firmly with your fingers. If they are still hard, add a few more minutes to the steaming time

Soak the dried shiitake mushrooms in water to rehydrate. Do not discard the soaking water as it will be used when simmering. Cut the burdock, carrots, and shiitake mushrooms into 1cm pieces, add them to a pot with the kelp stock and the soaking water from the dried shiitake mushrooms, and simmer over low heat

Once it starts to boil, add [A], cover with aluminum foil, remove from heat and let cool

Cool and heat repeatedly until the liquid has evaporated and the mixture has thickened. Serve in a serving dish and it's done