The less flour you use, the lighter the gnocchi, but the more likely they are to turn mushy while they wait, while you handle them and in the water. For 1 kg (2¼ lb) of potatoes, use anywhere from 200 to 300 g (1⅔ to 2½ cups) of flour.
Find it online: https://organictuscany.org/recipes/gnocchi/