How long does it keep?

Let it sit in the fridge for at least a few hours, preferably overnight.

Fish & Seafood

Kashubian-style herring

Name: Kashubian-style herring
Prep time: 20 min
Total time: 4 h 20 min
Yield: 4 people
Cuisine: Polen
Ingredients: 4 herring fillets; 2 onions; 2 tbsp tomato paste; 1 bay leaf; 2 allspice seeds; 2 tbsp oil; 100 ml water; 1 tsp sugar; 1 tsp vinegar; pepper

4 people · Fish & Seafood / Polish cuisine

Recipe photo: Kashubian-style herring (Polish cuisine)

Kashubian-style herring thrives on its sweet and sour sauce and the fact that everything is given enough time to soak through. Especially the next day the aroma is rounder, deeper and much more harmonious.

Timing

Preparation: approx. 20 minutes
Brewing time: at least 4 hours
Total: approximately 4 hours 20 minutes

Estimated nutrition

per serving · Calculated for 4 servings.

Energy: ≈ 230 kcal
Protein: ≈ 12.5 g
Carbohydrates: ≈ 5 g
Fat: ≈ 17 g

Approximate values based on the listed ingredients. Brands, cheese, portion size and preparation can change the values.

Calculation basis

Item weights and household measures are estimated. Unless specified: milk with 1.5% fat, cream with 30% fat and Gouda cheese. Optional ingredients, small amounts of seasoning and separately listed side dishes are excluded. For imprecise entries, the amounts below and comparable reference products are assumed. For alternatives, the first listed ingredient is used. Cooking losses have not been measured.

Quantity assumptions and ingredient mapping

2 onions · ≈ 200.0 g
2 tbsp tomato paste · ≈ 30.0 g
2 tbsp oil · ≈ 27.3 g
1 tsp sugar · ≈ 4.0 g
1 tsp vinegar · ≈ 5.0 g
4 herring fillets · ≈ 320 g

Matvaretabellen: Mattilsynet · Santa Maria

Food data: Max Rubner-Institut, BLS 4.0 (2025), CC BY 4.0. Calculated and rounded for this recipe. BLS 4.0 · CC BY 4.0

Ingredients

4 herring fillets
2 onions
2 tbsp tomato paste
1 bay leaf
2 allspice seeds
2 tbsp oil
100 ml water
1 tsp sugar
1 tsp vinegar
pepper

Instructions

Water herring fillets as needed and cut into pieces.
Cut onions into fine strips.
Heat oil in a pan and slowly fry the onions until soft.
Stir in the tomato paste and roast briefly.
Add water, bay leaf, allspice, sugar and vinegar and let the sauce simmer for a few minutes.
Allow the tomato and onion mixture to cool.
Layer herring and sauce alternately in a dish or glass.
Let it sit in the fridge for at least a few hours, preferably overnight.