Recipe for: Trout in mustard sauce with spelt and asparagus - photo 1
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Recipe for: Trout in mustard sauce with spelt and asparagus

Spicy Main Dishes Regional Cuisine of Poland 30 min Medium 44 views ~43.45 PLN * - (0)
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Description

Delicate trout drizzled with a creamy mustard sauce, served with aromatic pearl barley and young asparagus. The dish combines the classic flavor of fish with a sharper hint of mustard and a Polish addition of pearl barley instead of rice, creating a hearty yet spring-like composition. This is a regional dish in Polish style: a simple sauce based on cream and mustard, fresh seasonal asparagus, and dill for decoration. Perfect for a family dinner, a festive lunch, or as a main course during a spring gathering — aesthetically pleasing on the plate, balanced in flavor: creamy, tangy, and slightly spicy at the same time.

Ingredients Used

Ingredients (15)

Servings:
4
  • Trout 800 g
  • Barley groats 240 g
  • Butter 60 g
  • Mustard 30 g
  • Sour cream 150 g
  • Rapeseed oil 30 g
  • Onion 1 pcs (~150 g)
  • Garlic 2 clove (~10 g)
  • Wheat flour 30 g
  • Asparagus 300 g
  • Lemon 1.3 pcs (~100 g)
  • 🌿 Spices
  • Salt 0.1 pinch (~4 g)
  • Black pepper 4 pinch (~2 g)
  • ✨ Optional
  • Dill 1.5 bunch (~30 g)
  • Sorrel 60 g
💰 Estimated dish cost: ~43.45 PLN (10.86 PLN/serving)
* Prices missing for some ingredients

💡 Click an ingredient to mark it as used

Preparation steps

Addition — spelt

1

Prepare the pearl barley: rinse 240 g of pearl barley in a sieve under cold water until the water runs clear. Transfer to a heavy-bottomed pot, add cold water in a 1:3 ratio (barley:water) — about 720 ml. Add 1 g of salt. Bring to a boil over high heat, then reduce to low heat and cook for 25-30 minutes until the barley is soft but firm (when cut, the grain should be soft inside, not mushy). After cooking, drain excess water, add 20 g of butter, and stir until melted.

Ingredients: Barley groats, Salt, Butter
Use a pot with a capacity of at least 2 liters with a lid. Stir occasionally for the first 5 minutes, then cover the pot. Do not cook the pearl barley too vigorously — it will become mushy.

Asparagus

2

Prepare the asparagus: snap off the woody ends (hold the lower part of the stalk and break it where it naturally snaps). If the stalks are thick, cut them diagonally in half. Bring a large pot of water to a boil with 4 g of salt. Add the asparagus and blanch for 2-3 minutes (they should remain juicy and bright green). Immediately transfer to a bowl of very cold water (ice water) — this will stop the cooking process and preserve the color.

Ingredients: asparagus, Salt, Butter, Rapeseed oil
Use a wide pot or a large saucepan. The time depends on the thickness of the stems — thin ones for 2 minutes, thicker ones for 3 minutes. After blanching, drain and before serving, lightly sauté in a pan with 10 g of butter and a tablespoon of oil for 1-2 minutes.

Preparing the trout

3

Prepare the trout: if you have whole trout (800 g in total), check if they are gutted and rinsed. Pat each trout dry with a paper towel. Lightly salt the skin and flesh (about 4 g of salt divided among the fish) and pepper (2 g of pepper divided). Dust the outside and inside with a thin layer of flour — use about 30 g of flour; shake off the excess.

Ingredients: Trout, Salt, Black pepper, Wheat flour
If you prefer fillets, ask the fishmonger to cut them into boneless fillets. Use a sieve or plate for dusting to ensure the flour is even. Always dry the fish before applying flour — a wet skin won't brown.

Frying the trout

4

Heat a large skillet (26–28 cm) with 30 g of canola oil over medium-high heat. When the oil starts to shimmer, add 4 trout (you can fry in batches if the skillet is too small). Fry for 3-4 minutes on each side — the fish should have a browned, crispy skin and the flesh should easily separate from the spatula. Once cooked, transfer the fish to a plate, cover loosely with aluminum foil to keep warm.

Ingredients: Trout, Rapeseed oil
Use a non-stick skillet or cast iron. Do not flip the fish too often — one decisive turn is enough. If the fish is sticking to the pan, increase the heat and give it a little longer.

Mustard sauce

5

In the same pan (with the leftover fat), reduce the heat to medium and add 10 g of butter. Add 150 g of finely chopped onion and sauté for 3-4 minutes until it becomes translucent and soft. Add 2 cloves of garlic (10 g finely chopped) and sauté for 20-30 seconds until fragrant. Pour in 150 ml of cream and stir with a wooden spoon, scraping the browned bits from the pan. Add 30 g of mustard and 20 g of butter, stirring for 2-3 minutes until the sauce thickens — it should be creamy, slightly shiny, and coat the back of a spoon. Taste and season with salt and pepper as needed. If desired, add 60 g of chopped sorrel (optional) and cook for 1 minute until wilted — this will add a tangy note.

Ingredients: Butter, Onion, Garlic, Sour cream, Mustard, Salt, Black pepper, sorrel
Use a wooden spoon or whisk to stir the sauce. Do not bring the cream to a rapid boil (maximum light simmer), as it may curdle. If the sauce is too thick, add 1-2 tablespoons of the water from cooking the pearl barley.

Finishing

6

Once the sauce is ready, briefly return the pan-fried trout to the skillet (2 minutes) to absorb the flavor of the sauce and be evenly coated. Drizzle the fish with the juice of half a lemon (about 50 g of juice). Heat the spelt and optionally sautéed asparagus together for 1 minute in butter (the remaining 20 g of butter) or divide the spelt onto plates and place the asparagus alongside. Transfer the trout to a plate, drizzle with mustard sauce, and sprinkle with chopped dill (optional). Serve with a wedge of lemon.

Ingredients: Trout, Lemon, Barley groats, asparagus, Dill, Butter
Use tongs to transfer the fish to avoid breaking it apart. Squeezing lemon at the end enhances the flavor — do not add the juice too early to avoid "cooking" the cream.

Serving

7

On a plate, arrange a portion of barley, place 3–4 asparagus spears next to it, and top with the trout. Drizzle everything generously with mustard sauce. Garnish with chopped dill and serve with a wedge of lemon. You can also serve bread on the table.

Ingredients: Barley groats, asparagus, Trout, Dill, Lemon
Serve the dish immediately, as trout tastes best fresh and warm. Use large, flat plates for serving.

Fun Fact

💡

Trout was traditionally farmed in Polish fish ponds in villages; pairing it with groats is a typically Polish touch that replaces the more popular potatoes or rice today.

Best for

family dinner wiosenne spotkanie

Tips

🍽️ Serving

Serve hot; if the sauce has become too thick, thin it out with 1–2 tablespoons of the cooking water from the barley. A light white wine or a sour beer pairs well with trout. For those who enjoy spicier flavors, add 5–10 g of capers to the sauce (optional).

🥡 Storage

Store the fish and sauce separately in a sealed container in the refrigerator for up to 24 hours. Do not freeze the prepared cream sauce (it may change consistency). When reheating, use low heat in a pan, adding a little water to prevent the sauce from curdling.

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