Peel the potatoes and cut them into uniform chunks, then boil them in lots of lightly salted water until just done, about 20 minutes. Drain through a colander and return to the pan, shaking over a low heat to drive off all moisture. Be careful not to burn them. Mash thoroughly. Taste and add more salt if necessary.
Put on a large pan of salted water to boil for the gnocchi. Beat the sel