Śledzie w Oleju (Herring in Oil)
Savor the authentic taste of Poland with this classic Śledzie w Oleju, featuring tender, brined herring fillets bathed in aromatic oil with crisp, thinly sliced onions. This simple yet elegant appetizer offers a delightful contrast of briny fish and sharp allium, perfect for a sophisticated starter or a festive gathering. The extended marination ensures every bite is infused with rich, savory flavor.
An original recipe by Forkin
- Total time
- 3 hr 20 min
- Serves
- 4
- Difficulty
- Easy
Allergen information: may contain fish. Always check ingredient packaging if you have an allergy.
Mise en place
Ingredients
- 400 gbrined herring fillet, rinsed and drained
- 1 pcsyellow onion, thinly sliced into rings
- 1 cupvegetable oil
- 0.5 tspblack peppercorn
- 2 pcsbay leaf
Equipment
Chef's knife · Cutting board · Glass jar (1-liter capacity) · Paper towels · Mandoline slicer (optional)
The method
Step by step
- 1
Rinse the brined herring fillets thoroughly under cold running water for 2-3 minutes to remove excess salt.
About 3 min
Cook’s note: Rinsing is crucial to adjust the saltiness to your preference. For a less salty result, you can soak the fillets in cold water for up to 30 minutes, changing the water once.
- 2
Pat the rinsed herring fillets completely dry with paper towels.
About 1 min
Cook’s note: Ensuring the fillets are dry helps the oil adhere better and prevents dilution of the marinade.
- 3
Cut the dried herring fillets into uniform bite-sized pieces, approximately 1-inch wide.
About 2 min
Cook’s note: Consistent sizing ensures even marination and makes for easier serving.
- 4
Peel the yellow onion and thinly slice it into delicate rings.
About 3 min
Cook’s note: For perfectly uniform and paper-thin slices, consider using a mandoline slicer. This enhances both texture and flavor distribution.
- 5
Arrange a layer of herring pieces at the bottom of a clean glass jar or non-reactive container.
About 1 min
- 6
Distribute a portion of the sliced onion rings, black peppercorns, and bay leaves over the herring layer.
About 1 min
Cook’s note: Evenly distributing the aromatics ensures every piece of herring absorbs their flavor.
- 7
Continue layering the herring, onion, peppercorns, and bay leaves until all ingredients are used, ending with a layer of onion and spices.
About 3 min
Cook’s note: Press down gently on each layer to create a compact arrangement, which helps with submersion.
- 8
Pour the vegetable oil over the layered herring and onion mixture, ensuring all ingredients are completely submerged.
About 1 min
Cook’s note: If the oil doesn't fully cover the ingredients, gently press them down with a spoon or add a little more oil to prevent air exposure, which can cause spoilage.
- 9
Cover the container tightly with a lid or plastic wrap.
- 10
Refrigerate the herring for a minimum of 3 hours, or ideally overnight, to allow the flavors to thoroughly meld and deepen.
About 3 hr
Cook’s note: The longer the marination, the more pronounced and harmonious the flavors will become. Overnight marination yields the best results.
- 11
Serve the chilled Śledzie w Oleju directly from the jar or transfer to a serving dish.
About 1 min
Cook’s note: Allow the herring to sit at room temperature for 10-15 minutes before serving to enhance its flavor profile.
Keep it good
This classic Polish delicacy is wonderfully versatile. Serve it simply with slices of fresh rye bread, alongside boiled new potatoes sprinkled with dill, or with crisp crackers for a delightful textural contrast. For a complete meal, pair it with a shot of chilled vodka or a light, crisp white wine like a dry Riesling.
Store the herring in its oil in an airtight glass jar in the refrigerator, ensuring the fish remains fully submerged in oil.
This dish is traditionally served cold and does not require reheating.