Fried potatoes stick
Also searched as: rösti sticks, potatoes stick to the pan, fried potatoes fall apart

In short: Starch on the surface bonds to the pan before a firm crust can form.
Like wallpaper paste: wet it sticks fast, only once dry does it let go.
Enough heat left: the surface dries quickly and browns.
What happened in your kitchen?
Did the fat sizzle when the potatoes went in?
All causes, by frequency
4
- Pan not hot enough
In a lukewarm pan the starch into a sticky layer before it dries out.
Next time: Preheat the pan well with fat · Add the potatoes only once the fat shimmers
- Turned too early
A firm crust releases by itself. Before that, you tear it off.
Next time: Leave them until they release · Shake the pan lightly to test
- Raw potatoes with a starch film
Freshly cut raw potatoes bring a lot of loose starch.
Next time: Use boiled potatoes from the day before · Soak and dry raw slices
- Too little fat
Without a film of fat, the pieces sit directly on the metal.
Next time: Cover the base thinly but completely
Sources · 1
- Harold McGee: On Food and Cooking (2004), Kapitel Kartoffeln, Stärke, Frittieren