Cuisine: The Polish Palate
Course: Main Courses
Diet: Pescatarian, High-Protein, Low-Carb, High-Satiety
Occasion: Sunday Dinner, Dinner, Culinary Heritage, Date Night, Supper, Meatless Dinner, Christmas Eve, New Year's Eve

Okoń w Maśle Rakowym (Pan-Fried Perch in Crayfish Butter)

Delicate, flaky perch fillets bathed in a vibrant, sweet crustacean butter, a true classic of historic Polish river-cuisine.
Prep time 30m
Cook time 20m
Rest time 3m
Total 53m
Yield
2
Per serving:
907 kcal
7g Carbs
63g Protein
63g Fat
By Adam Dworak
Published: 12 August 2026
❖
Last Updated: 07 September 2026

Brilliant!

You cooked this today. How did it turn out?

Maybe Later

Ingredients

Read more in Pantry
Make it from scratch:

Success!

Ingredients added to your shopping list.

View Shopping List Continue Browsing

Kitchen Kit

  • Large Bowl
  • Pestle and Mortar
  • Fine Mesh Sieve
  • Small saucepan
  • Large Frying Pan
  • Kitchen Paper
  • Chopping Board
  • Chef's Knife
  • Spoon
  • Fish Spatula
  • Small bowl

Method

  1. If your whole cooked crayfish are frozen, thaw them quickly by submerging them in a large bowl of cold water for 20 to 30 minutes (or leave them in the fridge overnight).
  2. To prep the thawed whole crayfish, firmly twist the tails away from the heads. Crack open the tail shells, gently pull out the sweet meat, and carefully remove the dark intestinal tract. If the claws are chunky, give them a crack with the back of a knife and extract that meat too. Set the meat aside in a bowl. Discard the heads and inner guts, but keep every single piece of the tail and claw shells.
  3. Chuck the saved empty shells into a mortar and pestle and bash them thoroughly until well crushed.
  4. In a small saucepan over medium-low heat, melt 100g of the unsalted butter. Tip in the crushed crayfish shells. Simmer very gently for 10 minutes to infuse, watching carefully so the butter does not catch or brown, until it turns a rich sunset orange. Pass the butter through a fine sieve into a clean bowl, pressing the shells firmly with the back of a spoon to extract all the flavour and fat. Discard the spent shells.
  5. Pat the perch fillets completely dry with kitchen paper. Season the flesh evenly with all of the salt and black pepper. Lightly dust the skin-side of the fillets with the plain flour, shaking off any excess.
  6. Heat a large frying pan over medium-high heat. Add the remaining 50g of butter. Once foaming and the water has cooked out, lay the perch fillets in the pan, skin-side down. Press down gently with a spatula for 10 seconds to stop them from curling.
  7. Cook undisturbed for 4 to 5 minutes until the skin is deeply crisp and golden. Carefully flip the fillets.
  8. Pour the white wine into the pan to deglaze, letting it bubble fiercely and steam dry to reduce by half. Tip the infused orange crayfish butter and the reserved crayfish meat into the pan.
  9. Baste the fish continuously with the vibrant foaming butter for 1 to 2 minutes, until the flesh is just cooked through and beautifully opaque.
  10. Remove the pan from the heat. Squeeze over the juice of the lemon and scatter generously with the fresh dill. Serve immediately, pouring the luscious pan juices and tails directly over the crisp fish.
Chef's Note & Storage
Fridge 2 days. Keep the crayfish butter separately; it will solidify when cold. Reheat the fish very gently in a warm oven to avoid a rubbery texture, and melt the butter over the top just before serving.
00:00

The Elegance of Old Polish Rivers

Before the industrialisation of our waterways, the rivers and lakes of Poland teemed with freshwater crayfish. They were the undisputed kings of the manor house table, prized for their sweet meat and the astonishingly vibrant, sunset-coloured fat they yielded. Okoń w maśle rakowym (Perch in Crayfish Butter) is a direct nod to that 19th-century elegance. We pair the firm, pristine white flakes of fresh perch with a luxurious, crustacean-infused butter. It is rich, historically significant, and remarkably simple to execute if you respect the ingredients and take the time to coax the flavour from the shells.

CHEF'S SECRET: The absolute magic of crayfish butter (masło rakowe) lies in the shells, not just the tail meat. Bashing the shells and simmering them gently in butter extracts a deep, sweet crustacean flavour and a brilliant orange colour that you simply cannot fake. When buying whole cooked crayfish, never throw away the tail and claw shells—they are culinary gold.

❖

Sourcing and Prepping the Catch

European perch is a fantastic, highly underrated fish in the modern kitchen. Its flesh is tight, white, and takes beautifully to pan-roasting. Because whole crayfish are often sold frozen, preparing them requires a brief thawing ritual. Breaking them down is a tactile joy: you save the tails for a meaty garnish, extract flavour from the shells for the butter, and let the fish itself shine with a crisp skin and perfectly opaque flesh. Keep your heat controlled and let the butter do the talking.

Back to Main Courses

Cook’s Notes & Discussion

Be the first to leave a note on this recipe.

Leave a note or ask a question

Back to Main Courses