Tip the ricotta into a fine sieve, place on top of a bowl and leave to drain for at least 4 hours.
Decant the drained ricotta into a large bowl, add the nutmeg, parmesan cheese, egg yolk and seasoning. Mix well until a uniform mix is formed.
Spread about 1/3 of semolina on the bottom of a little tray.
Using a tablespoon as a measure, spoon and roll with your hands little balls and place on the semolina in the tray. Dust your hand with semolina to avoid sticking.
Once all the balls have been formed, cover them with the remaining semolina, place in the fridge to dry and chill overnight, or at least 12 hours.
When ready to cook them, place a large pot of salted water on the heat, once simmering, using a spider or a slotted spoon, lower down the Gnudi into the water, cook for 2-3 minutes.
Meanwhile, put the butter and dill in a frying pan (Skillet) and melt until the butter starts foaming, then add the Gnudi and cook until they crisp up. Once the butter reached a light nut colour the Gnudi will be ready to serve.
Plate them and top with the remaining grated parmesan a a light dusting of nutmeg.