3/4 to 1 pound lacinato kale, stems and center ribs discarded
2 tablespoons finely chopped shallot
1 1/2 tablespoons fresh lemon juice
1/4 teaspoon salt
1/4 teaspoon black pepper
4 1/2 tablespoons extra-virgin olive oil
1 cup coarsely grated ricotta salata (or other hard Italian cheese)
Working in batches, cut kale crosswise into very thin slices. Whisk together shallot, lemon juice, salt, and pepper in a small bowl, then add oil in a slow stream, whisking until combined well. Toss kale and ricotta salata in a large bowl with enough dressing to coat well, then season with salt and pepper.