You can also use komatsuna spinach instead of the spring onion. Put the stalks in the pot first, cook them a little, then add the leaves. When the leaves become slightly darker in color, turn off the heat.
Regular spinach may have a slightly bitter taste. If you use spinach, we recommend parboiling it before adding it to the miso soup.
If there is too much oil on the aburaage, thin deep-fried tofu, remove it with a paper towel before use.
Miso soup with nameko mushrooms is also popular in Japan.
You might also enjoy our Hearty Miso Soup recipe.