Lightly beat the egg in a small bowl aside. Combine the ricotta and salt in a larger bowl and lightly press the cheese with the prongs of a fork. Pour in the egg and gently mix with the fork.
Gradually add the flour, gently mixing it in with the fork or a spatula. Do not overmix and stop when it is combined. Transfer the dough to a floured working surface and give it a quick hand-knead before rolling it up into a ball. Overkneading will result in chewy gnocchi, so be quick and gentle.
Cut off one portion of dough with a knife or bench scraper. Roll it into a sausage about as thick as your thumb. Cut up the dough sausage every centimetre to cut out the gnocchi. Press them against a gnocchi board to give them the traditional finish, if you wish. Repeat until all dough is used.
Keep the formed gnocchi on a floured surface, with some space in between to prevent them from sticking to one another. Cook in salted boiling water for 2-3 minutes or until they rise to the surface. I recommend to cook them in batches as to not overcrowd the pot. Do not drain like pasta: scoop up the gnocchi with a slotted spoon and use the same simmering water for the following batches.
Notes
I live in Sweden and the ricotta I have access to is quite dry. I am aware that some other types of ricotta might be more watery. Depending on the ricotta type you have access to, you may need to place it on a colander for a couple of hours prior, to let any excess liquid drain.
The nutritional information provided is made with an online calculator and only meant to be used as a guideline.