These rules do not constitute a recipe. Practice will get you to the right light Gnocchi. It is a very tactile experience that is difficult to describe, but easy to demonstrate.
1
Star with cold water, potatoes and salt. Cook with lid off until very tender.
2
Use big, old potatoes. Maybe 30 days old (they develop good starch content).
3
Remove and peel potatoes when they are hot. Do not put them in cold water. Rice them immediately
4
Let the riced potatoes rest until they are very cold. They will absorb less flour, which will make them ultimately lighter.
5
Add no eggs or cheese, just a little flour to give them the right consistency. Keep them light adding a little flour at a time.
6
Always make them into pillow shape by rolling dough into long tubes, cutting rolls ever 1 1/4 inch and lightly pinching the ends.