Prep the potatoes: Peel (if desired) and dice the 3 potatoes into ½-inch cubes
Prep the shiitakes. Remove the tough stems and slice the caps thinly
Cook the potatoes: Bring the 16 cups of water to a boil. Add the potatoes and simmer for about 10–15 minutes, until they're just becoming tender
After the potatoes have cooked for 10–15 minutes, add the raw shiitake mushrooms and simmer on medium heat for 2-3 minutes
Next add the chopped kale. Simmer the kale for 5–8 minutes, until it's tender but still bright green
Add the silken tofu and heat for 2–3 minutes
Turn the heat to low or off, dissolve the miso in some hot broth, stir it into the soup, then finish with the sesame oil
When plating the soup, add your scallions, another small drizzle of toasted sesame oil, cilantro, and juice of a lemon wedge. Other greens that you can add to your soup the day of to switch up the flavour profile: spinach and Bok choy work really well!