Sift the flour onto the work surface, and make a well in the middle.
Crack in the egg, and use a fork to beat it well, adding some flour in as you go.
Add the ricotta, parmesan and black pepper, and knead everything well into a smooth dough that is slightly sticky - add more flour if necessary.
Cut the dough into wedges to handle it easier, and roll each wedge into a rope of about 1 inch in diameter.
Cut the rope into bite-sized pieces - you can also use a fork to create ridges in the gnocchi, but that's optional.
Bring a pot of salted water to the boil, add add the gnocchi, working in batches to avoid overcrowding the pot.
The gnocchi are ready when they float to the surface, that can take between 1-3 minutes, depending on the size of the gnocchi.
Serve them with your favourite sauce and extra parmesan cheese.