This soup is simultaneously comforting, fresh and nasal-clearing — as good for sick days as for those crisp days of spring. The key is a spicy bright-green slurry made by blending a bunch of raw spinach, miso, lime juice, fresh chiles and ginger. Because it’s poured into the soup pot of tender lentils and rice right at the end, its color and flavor stays vibrant. For pops of savory nuttiness, top your bowls with slivers of shiitake mushrooms that have been browned in sesame oil. They make this soup especially satisfying, but you could also top bowls with stir-fried or roasted vegetables like asparagus and winter squash.
