Prepare the mushroom broth according to this recipe. After straining, season it with the rice vinegar and mirin. Scoop 1/4 cup of the broth into a small bowl and add the miso paste. Whisk until smooth, then stir the miso mixture into the remaining broth. Season to taste.

Meanwhile, heat 1 tablespoon of the olive oil in a large lidded skillet over medium heat. Add the bok choy in a single layer and sear for 1 to 2 minutes, or until browned underneath. Sprinkle with salt, add the water, toss, and cover. Cook until the bok choy is bright green and tender, about 1 minute. Remove from the pan and set aside.

Wipe out the pan and return it to the stove. Add the remaining 2 tablespoons olive oil and heat over medium heat. Add the mushrooms and a pinch of salt. Let cook for 2 minutes without stirring, then toss and cook, stirring occasionally, for 5 more minutes, or until tender and browned.

Cook the noodles according to the package instructions. Drain and divide among four bowls. Pour in broth to cover. Top with the bok choy, baked tofu, mushrooms, daikon, and scallions. Serve with chili crisp and tamari.