Smoked Herring Recipe: Scandinavian-Style With Dill and Mustard Cream

This Scandinavian-style smoked herring recipe transforms a traditional Nordic delicacy into a restaurant-worthy centerpiece that’s surprisingly simple to prepare at home.

After years of perfecting my grandmother’s Sunday roast chicken, I discovered how the same principles—gentle seasoning and precise timing—apply to smoked fish, creating a dish that’s both elegant and approachable.

The key lies in balancing the rich, smoky depth of the herring with bright dill and a tangy mustard cream that cuts through the richness.

The recipe builds on classic Scandinavian techniques while adapting them for modern home kitchens. You’ll start with high-quality smoked herring—whether store-bought or freshly smoked—and pair it with a creamy mustard-dill sauce that adds a luxurious touch.

The process requires just 15 minutes of active prep, making it ideal for weeknight dinners or weekend entertaining when you want to impress without spending hours in the kitchen.

What you’ll end up with is a dish that’s visually stunning and deeply satisfying—golden herring fillets resting on a bed of crisp onions, drizzled with that velvety mustard cream.

The contrast of textures and flavors creates a perfect balance: the herring’s smoky richness, the dill’s fresh herbal notes, and the mustard’s sharp tang all come together in every bite. It’s the kind of meal that feels special without requiring advanced skills.

Serve this recipe with crusty rye bread to soak up every last drop of sauce, or pair it with a simple green salad for a complete Scandinavian-inspired meal. The leftovers keep beautifully in the refrigerator for up to 3 days, making this an excellent make-ahead option for gatherings.

Let’s bring this Nordic classic to your table with confidence.

Ingredients for smoked herring

Nordic flavors meet modern simplicity with these 12 ingredients for restaurant-worthy smoked herring.

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The herring is everything here—look for skin-on fillets at specialty markets or Nordic grocery stores like Nordic Warehouse. If using store-bought, check for bright red gills and firm flesh—those are your quality indicators. I always buy extra because the leftovers make perfect sandwiches. For the dill, fresh is non-negotiable—dried just won’t cut it. The onions? Sweet yellows caramelize better than reds for this dish, but white works too. Grab a bag from Trader Joe’s if you want them pre-sliced—saves time without sacrificing quality.

No fresh dill? Dried dill at one-third the amount works in a pinch, but it’ll lack that bright Nordic freshness. Substituting the mustard? Whole-grain mustard adds texture, but Dijon is key for that signature tang. The cream can be swapped for Greek yogurt if you’re watching fat, though it’ll be lighter. For the herring, if you can’t find smoked, cold-smoked salmon is your best bet—just reduce cooking time. The butter on top? Brown it slightly for extra flavor—takes 30 seconds in a pan.

This dish shines when prepped ahead. Store the herring and sauce separately in airtight containers for up to 3 days—the flavors actually deepen overnight. Reheat the sauce gently (no boiling!) and crisp the herring in a hot pan for 30 seconds per side. The rye bread? Toast it fresh before serving to keep it crisp. Leftovers? Wrap the herring tightly in parchment and freeze for up to 2 months—thaw in the fridge overnight for best results.

Step-by-step instructions for Scandinavian-style smoked herring

Here’s how to transform simple ingredients into a restaurant-worthy Scandinavian open-faced sandwich.

In a medium bowl, combine the 0.5 cup heavy whipping cream with the 2 tablespoons Dijon mustard and 0.5 teaspoon Diamond Crystal kosher salt. Whisk vigorously until the mixture becomes smooth and fully emulsified—this should take about 1 minute of continuous whisking. The sauce should thicken slightly and develop a pale, creamy consistency.

Here’s the thing—don’t rush this step. The mustard needs to fully incorporate into the cream to create that signature tangy richness. If the mixture looks streaky after whisking, add 1 teaspoon cold water and whisk again until smooth. This sauce is the foundation of your dish, so take the time to get it right.

Heat the 2 tablespoons extra-virgin olive oil in a small skillet over medium heat. Add the 1 whole yellow onion, sliced thinly, and cook for 8-10 minutes until the onions are golden brown and caramelized at the edges. You’ll know they’re ready when they release easily from the pan and have a deep, sweet aroma.

During the last 2 minutes of cooking, stir in the 0.5 cup finely chopped fresh dill. The dill will wilt slightly and release its bright, herbal fragrance—this is when the dish starts to come together. Remove the skillet from heat and let the mixture cool for 3 minutes before combining with the mustard cream sauce. The warm onions will help infuse the dill’s flavor into the cream.

In a separate bowl, gently fold the cooled onion-dill mixture into the mustard cream sauce. Add the 1 tablespoon freshly squeezed lemon juice and 0.25 teaspoon freshly ground black pepper, mixing just until combined. The lemon juice will brighten the flavors and cut through the richness of the cream.

Now, carefully add the 12 ounces smoked herring fillets, skin-side down if using skin-on fillets. Using a fork, gently flake the herring into the sauce, being careful not to break it into tiny pieces. The herring should be distributed evenly throughout the mixture, with some larger flakes visible for texture. Let this sit at room temperature for 10 minutes to allow the flavors to meld.

While the herring mixture rests, prepare the 8 slices crusty rye bread by toasting them in a dry skillet over medium heat for 1-2 minutes per side until they’re golden brown and crisp. The bread should develop a deep, toasty aroma and a slight char in spots—this is essential for holding up to the creamy topping.

Here’s where it gets fun—while the bread is still warm, spread a thin layer of the 1 tablespoon unsalted butter on each slice using the back of a butter knife. The butter will melt slightly and create a rich, velvety base for the herring mixture. Let the butter cool for 1 minute before proceeding to the final assembly.

Spoon the herring mixture generously onto each toasted rye slice, creating an even layer that covers the entire surface. The mixture should be thick enough to stay on the bread without sliding off. Garnish each sandwich with the 2 tablespoons minced fresh chives, sprinkling them evenly over the top for a pop of color and freshness.

Serve immediately while the bread is still warm and crisp. The contrast between the cool, creamy herring mixture and the warm, toasted rye bread creates the perfect balance of textures. Each bite should deliver a harmonious blend of smoky herring, tangy mustard cream, sweet caramelized onions, and bright dill—all held together by the sturdy rye bread.

Common mistakes when making this dish

Over-Smoking the Herring

One of the biggest mistakes I see is over-smoking the herring, which happens when you leave it in the smoker too long. The herring should have a light, delicate smoke flavor—not a campfire taste. If using store-bought smoked herring, check the packaging for cooking instructions.

For homemade smoking, aim for 30-45 minutes max at 180-200°F using applewood or hickory chips. Over-smoking turns the herring bitter, and no amount of mustard cream can fix that. 🚫

Skipping the Skin

Many people peel the skin off herring fillets before serving, but that’s a mistake if you want the authentic Nordic experience. The skin adds texture and subtle flavor—it crisps beautifully when toasted and holds up to the creamy sauce.

If you’re concerned about texture, try lightly scoring the skin with a knife before cooking to help it crisp evenly. I promise, the first time you eat it with the skin on, you’ll never go back. 🐟

Using Low-Quality Herring

Not all herring is created equal, and using cheap or old herring ruins the dish. Look for firm, bright red gills and flesh that springs back when pressed. If the herring smells fishy or has a slimy texture, it’s past its prime.

I always buy from Nordic Warehouse or my local fishmonger—they carry high-quality, flash-frozen herring that’s been smoked just right. For the best results, use herring that’s been smoked within the last 2-3 months. 💡

Over-Mixing the Sauce

The mustard cream sauce needs to be smooth but not overworked—whisking too vigorously can turn it grainy. Once the mustard is fully incorporated, stop mixing immediately. If you’re worried about lumps, strain the sauce through a fine-mesh sieve before combining with the onions and dill.

I’ve seen people ruin an otherwise perfect dish by turning the sauce into a thick paste. The goal is creamy, not heavy. ✨

Not Resting the Herring

After flaking the herring into the sauce, it needs 10 minutes to rest before serving. This lets the flavors meld and the herring absorb the mustard-dill mixture. Skipping this step means the herring stays too separate, and the dish loses its cohesive texture.

Think of it like resting a steak—it makes all the difference. If you’re short on time, at least let it sit for 5 minutes before serving. 🕒

Burning the Onions

Caramelizing onions is an art, and burning them is a common mistake. Keep the heat at medium and stir frequently to prevent browning too quickly. If the onions start to darken too much, reduce the heat immediately.

The goal is golden, sweet onions—not blackened bits. For extra insurance, add a splash of water if they stick to the pan. Trust me, crispy onions are great, but burnt onions ruin the dish. 🧅

Frequently asked questions