Not Just Stew · The atlas · A working atlas of the world's cooking

The Nordics and the Baltic · Volume 24, The Swedish Crown, the Gulf of Bothnia and the Reindeer North

Kalakukko

Savo, Finland

Kalakukko, whole small fish baked inside a rye crust: a thick, dark golden-brown oval loaf with a deeply crimped seam along one side, one end sliced open to reveal small whole fish and pale strips of pork pressed inside a dense rye crust.

Illustration

Time
8 hours

First documented in 1792, when a district physician reported the Savonian "Cala Cucu" to the royal medical college, and awarded EU Protected Designation of Origin status in 2002, which now fixes its method. A real piece of kitchen folklore travels with it: the kalakukko is said to "sing" in the oven if its crust cracks and juices hiss onto the tray.

As tradition built it

Serves 6 to 8. About 6 to 8 hours for this method; other traditional methods can take up to 20 hours.

Ingredients

  • 500 g rye flour
  • 300 ml water
  • 1 tsp salt
  • 600 g small whole fish (vendace or perch, or sprats as the UK substitute), cleaned
  • 200 g fatty smoked bacon, cut into strips
  • to taste salt
  • to taste black pepper
  • a generous knob butter, for finishing

Method

  1. Mix the rye flour, water and salt into a firm, cohesive dough, working just enough to bring it together, no kneading needed.
  2. Roll into a large oval, about 1 cm thick.
  3. Layer the small fish and bacon strips over one half of the oval, seasoning with salt and black pepper as you go.
  4. Fold the other half of the dough over, and crimp the edges firmly to seal completely, since the seal is what makes the dish work.
  5. Bake at a high heat, 250°C, for 30 minutes, until the crust is set and browned.
  6. Lower the oven to 200°C for a further 30 minutes.
  7. Wrap the whole loaf tightly in foil and return to a low oven, around 125°C, for 5 to 7 hours, until the fish bones have softened completely.
  8. Rest before slicing, and serve warm with butter and boiled potatoes, or cold with buttermilk.

What a modern chef changes

The crust's own sealing logic respected properly, with the tools that recur here.

Rung 1

Method

  1. Set the fish and bacon filling briefly sous vide before assembling, around 55°C for 20 minutes, so the protein is already gently set before the long bake begins, reducing the risk of an unevenly cooked centre over such a long, low finish.
  2. Judge the final low bake by bone texture, not by the clock: press a skewer through the crust into the centre, a properly finished kalakukko yields no resistance from the fish bones at all, and the range this chapter gives, 5 to 7 hours at 125°C, should be treated as a starting point rather than a fixed rule.
  3. Reduce any juice that escapes during baking in a small pan, and brush it back over the crust before serving, rather than letting it go to waste on the tray.
Open in the atlas: cook mode, scaling and tick off lists