There are many dishes that are well-known in Japan but relatively unfamiliar abroad, and Mizore Jiru is a perfect example. Its thick consistency helps keep it warm for a longer time, and the refreshing flavor of grated daikon radish fills your mouth with every sip.
Fill a pot with water and bring it to a boil. Once boiling, reduce the heat to low, add bonito flakes, and let it simmer for 3 minutes.
Turn off the heat and strain the mixture through a sieve lined with paper towels or a cloth (such as cheesecloth). Alternatively, if you don't mind having some fine bonito flakes remaining, you can simply use a fine-mesh strainer. Bonito dashi is now ready.
Peel the daikon thinly and grate it (do not discard the juice). Trim the base of the nameko mushrooms and rinse them lightly.
Return the dashi to the pot, add the grated daikon with its juice, and bring it to a boil. (You can skim off any foam floating on the surface if desired.) Once boiling, add the nameko mushrooms and simmer them over low heat for 2 minutes. Then, turn off the heat, add salt and soy sauce, and let the flavors blend.
Serve in each bowl and top with mitsuba to taste.
Notes
If you already have bonito dashi or another type of dashi, start from step 3. In this case, use ⅚ cups (200ml) of your dashi for 2 servings.
You can store it in the refrigerator for up to 2 days.