In a large soup pot, heat the sesame oil over medium-high heat. Add the ginger, turmeric, garlic, and onion, and sauté, stirring often, until the onion starts to caramelize, about 5-7 minutes. Add the curry paste, mix well, and cook, stirring, until very fragrant, about 2-3 minutes. Add the vegetable broth, the coconut milk, and the maple syrup. Bring to a low boil, cover, reduce the heat and simmer for as long as you can. I recommend at least 45 minutes, but feel free to extend it to 90 minutes, for even more flavor.

Before serving, take out a cup of broth in a small bowl and add to it the miso paste. Mix well and put back in the pot. Stir. To serve, place the noodles and the zucchini noodles in a shallow bowl. Add the spinach to one side. Ladle some broth (with or without the onions/ginger/turmeric/garlic mixture) in the bowl, and top with the shiitake, green onions, fresh cilantro, pumpkin seeds, and sambal oelek.