Really good tested Gnocchi dough
Most cooks ruin potato gnocchi by boiling the tubers in water. Boiling saturates the flesh with liquid, demanding excessive flour later to bind the mass. Excess flour produces heavy, rubbery dumplings instead of pillow-soft pillows. Baking potatoes whole over a bed of rock salt draws out internal moisture through dry heat. Piercing the skin at 220 C allows steam to escape efficiently. Potatoes are fully cooked when a metal skewer enters the center with zero resistance.
Working the hot potato puree destroys the eventual texture. Cool the riced potatoes completely before incorporating egg yolks and flour. Add the sifted flour in small increments rather than dumping the entire weight into the bowl. Stop adding flour the moment the dough holds together without sticking aggressively to your palms. Freshly prepared dough requires immediate shaping and cooking, whereas commercial dry pasta relies on an extruded drying process that creates shelf stability and a denser bite.