Place a large pot of water on to boil for the linguini.
Place the pine nuts, garlic, lemon zest and juice in a food processor and pulse to finely chop. Add the kale in stages and pulse to finely chop. Add some salt, pepper and a few grates of nutmeg. Stream in the EVOO until a thick sauce forms. Transfer to a bowl and stir in the Pecorino.
Salt the water and cook the pasta to al dente. Add 1 cup starchy pasta water to the pesto just before draining the pasta. Toss the linguini with the pesto to coat, 1 to 2 minutes. Adjust the seasoning and serve with extra cheese to pass at the table.
Get Rachael's shopping list for this episode's recipes here [tk link].