Dishbeginnerdraft

Rösti

Also searched as: rösti, roesti, Swiss hash browns, potato rösti

In short: Rösti turns crisp when the starch plays along: boiled potatoes from the day before, a hot pan, patience.

Picture it

Like a cake of potato strands that the starch glues together and the heat crusts on the outside.

The decisive moments

1
Boil potatoes in their skins the day before and let them cool
Cooled starch firms up. The shreds do not fall apart or stick into a mash.
Going stale (retrogradation)
2
Grate coarsely and salt only just before frying
Salt draws out water. Salted too early, the shreds turn wet.
Osmosis: salt and sugar draw out water
3
Press flat in hot butter or clarified butter
Contact with the hot surface and fat: the underside browns evenly.
Maillard reaction
4
Do not move it until the edge releases, then turn
The crust releases by itself when it is ready. Before that, it tears.
Crispy

Sources · 1