Prized for its oceany umami flavor in sushi and miso soup—and now a popular packaged snack item—nori is dried Japanese seaweed that offers new possibilities for cooks. Its papery texture makes it easy to crisp in the oven and crumble over veggie sides, noodle bowls, and stir-fries for a little briny kick. Or make your own snack: Lightly brush the nori with water, sprinkle with sea salt, and toast in a 250° oven for 15 minutes.