Rösti vs Hash Browns: What's the Difference?

One cake vs a scatter

The difference starts before the stove. Swissmilk, the Swiss dairy farmers' recipe site, begins its classic rösti with potatoes boiled in their skins the day before. They are grated, salted, pressed into a single cake in clarified butter, turned with a plate or lid and finished with flakes of butter.

Not every Swiss cook boils first. Writing for The Local, Helena Bachmann grates raw potatoes for hers, so the fair rule is that rösti is usually made from boiled potatoes, not always. Our Swiss rösti follows Swissmilk: day-old potatoes, close to half an hour of slow frying and one confident flip.

Hash browns go the other way. America's Test Kitchen's classic version grates raw russets, squeezes them very dry, scatters them into butter that is just starting to brown and presses them flat, then cooks the first side 7 to 8 minutes. ATK found that high-starch russets held together and browned best. Our diner hash browns use that method.

Where rösti comes from

Rösti is usually traced to farm kitchens in German-speaking Switzerland, where, Bachmann writes, it was a cheap, simple meal for people working the fields. The canton of Bern gets most of the credit: the usual story makes it a farmers' breakfast there, and the dish is often called röstis bernois in French.

It is so tied to German-speaking Switzerland that the informal line between the German- and French-speaking regions is nicknamed the Röstigraben, the rösti ditch. Bachmann notes that much of the divide rests on stereotypes. Rösti is a national favorite now: in 2022 the Swiss Farmers' Union fried a 13-square-meter rösti in front of the parliament building in Bern, swissinfo reported.

Where hash browns come from

American hash browns began much closer to rösti than most people expect: they were a way to use up cold boiled potatoes. The word researcher Barry Popik found "hashed brown potatoes" in an 1887 Brooklyn newspaper item about Maria Parloa's cooking class. Fannie Farmer's Boston Cooking-School Cook Book chops two cups of cold boiled potatoes, cooks them in salt pork fat, lets them brown underneath and folds them like an omelet.

You will also see an 1835 Minnesota recipe called the first. We could not find it, and the earliest uses we could check date from the late 1880s, so the safe statement is that hash browns were in American cookbooks by the late 1800s. Popik's earliest "hash browns" is from 1911. Today the term covers shredded or chopped potatoes, cooked loose on a diner griddle or formed into a patty.

Why squeezing out the water matters

Grated raw potato carries a lot of water, and ATK names the two classic hash brown failures: a cake that falls apart when you flip it, and an outside that burns before the inside cooks. That is why most recipes start by wringing the shreds in a dish towel.

ATK's Better Hash Browns go further. The shreds get a quick rinse in salt water, which keeps them from graying and lowers the temperature at which their starch sets, then a wring and a turn in the microwave to drive off more water and start the starch gelling, so they hold together before they reach the pan.

Rösti made from boiled potatoes skips most of that, since the potato is already cooked and only needs to brown. Pick a side in our rösti vs hash browns debate, or see the whole family in our potato pancakes hub.

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