Miso Mushroom and Leek Pasta
https://cooking.nytimes.com/recipes/1025951-miso-mushroom-and-leek-pasta
https://archive.ph/fik2n

Alchemy is at play here with the delightful union of miso and sherry vinegar, both working to amplify mushrooms savory, umami notes, and create a rich, layered pasta in just over 30 minutes. Sautéed leeks and mushrooms form the core flavors of the pasta, but it is the addition of miso that completes the dish: Whisked with the starchy pasta water and grated Parmesan, it forms a quick sauce to coat the noodles. A farro, spelt or whole-wheat pasta would nicely complement the earthy flavors of this dish.
Preparation
Step 1
Bring a large pot of salted water to a boil.
Step 2
Meanwhile, heat 2 tablespoons oil in a Dutch oven or deep 12-inch skillet over medium-high until shimmering. Add the leeks, season with salt and cook, stirring often, until softened, about 5 minutes. If they look dry at any point, add a drizzle of oil.
Step 3
Add the mushrooms to the leeks, season lightly with salt, and cook, stirring every 2 minutes, until the mushrooms have browned, about 10 minutes. (If they are done before the pasta, then adjust the heat to low.)
Step 4
When the water is ready, add the pasta and cook until al dente. Halfway through the cooking process, reserve 1 cup of water and let cool slightly on the counter. Drain the pasta in a colander and drizzle with olive oil if done before the mushrooms.
Step 5
When both the mushrooms and pasta are done, stir the miso into the reserved pasta water until mostly dissolved. Add it to the Dutch oven or skillet over medium-high heat along with the pasta, cheese and vinegar, stirring vigorously until a cheesy sauce forms and coats the noodles, 1 to 2 minutes. Remove from the heat and season to taste with more vinegar if needed.
Step 6
Garnish with the parsley and more cheese; serve with a final drizzle of oil.