Sweden · Signature dish

Janssons frestelse

Jansson's temptation, a creamy potato and sprat gratin

Matchsticks of potato layered with sweet, soft onions and spiced Swedish sprats, baked in cream under a buttery crumb until golden, bubbling and gently salty.

Janssons frestelse

Janssons frestelse is the Swedish potato gratin with a secret: layers of thin potato matchsticks and slowly softened onion are tucked with small fillets of spiced sprats and their sweet, aromatic brine, then baked in cream until the fish melts into the sauce and seasons every strand of potato. It is a fixture of the Christmas julbord and the Easter table, and for generations it has also been the dish brought out late in the evening at Swedish parties, a warm, salty pause before guests head home.

Two things often confuse visitors. The first is the fish: Swedish recipes call for ansjovis, which sounds like anchovies but are actually sprats cured in sugar, salt and spices, and much milder and sweeter. The second is the name. Nobody agrees who Jansson was; the leading theories involve a nineteenth century opera singer and a Swedish film of 1928, and neither has ever been proved. It is one of the few mysteries in Swedish cooking, and arguably the most delicious.

The onions

Ingredients

The gratin

Ingredients

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