Bring a pan of water to the boil; remember to salt lightly to avoid an excessively salty result. Cook the Nonna Rina tagliolini to al dente, add to the pan with a couple of ladles of the cooking water, mix in the pecorino and sauté to obtain a creamy texture. This should be done off the heat: too hot and the cheese will thicken too much or form lumps. Add plenty of black pepper and serve.