Rösti

A large, golden potato cake made from coarsely grated potato, pan-fried until crisp outside and tender within.

Rösti originated as a breakfast dish among farmers in the canton of Bern before spreading across Switzerland, and it has become significant enough to lend its name to the "Röstigraben," or "rösti ditch," the informal cultural and linguistic boundary between German-speaking and French-speaking Switzerland, referring to where the dish is most commonly eaten. Originally made with raw grated potato, versions using pre-boiled potato became common too, particularly for a firmer, easier-to-flip cake.

Traditional rösti uses coarsely grated potato, either raw or par-boiled and cooled, pressed into a single large cake in a well-buttered pan and cooked slowly so the outside turns deeply golden and crisp while holding together as one piece when flipped.