For the water sparrows mix flours, add salt and egg, mix a dough with water. The dough should fall from the wooden spoon with difficulty tearing.
In a large saucepan, boil water with plenty of salt, cut off large spatulas with a teaspoon and slide into the boiling water.
Process about a third of the dough in this way, then lift the dumplings out of the boiling water with a sieve ladle, place them in a sieve and immediately dip the sieve into ice-cold water to quench the dumplings.
Proceed in the same way with the remaining dough. Serve the water sparrows as a side dish or with sauces, etc.