Court-Bouillon Poached Salmon with Tarragon-Lemon Butter

Court-Bouillon Poached Salmon with Tarragon-Lemon Butter

Succulent, tender salmon fillets gently immersed in an aromatic white wine court-bouillon, crowned with a melting disc of fragrant citrus and tarragon compound butter.

35mIntermediate4 servings
Remix

Equipment

Deep wide skillet with lid
Small mixing bowl
Fork
Parchment paper
Paper towels
Cutting board
Chef knife
Fine microplane grater
Citrus juicer*
Instant-read food thermometer
Slotted fish spatula
Dinner plates
Digital kitchen scale

* optional

Ingredients

4 servings

compound butter

  • 80 g unsalted butter, softened to room temperature
  • 5 g fresh tarragon, finely chopped leaves
  • 5 g fresh chives, finely minced
  • 2 g fresh lemon zest, finely grated from 1 unwaxed lemon
  • 5 ml fresh lemon juice, freshly strained
  • 2 g flaky sea salt, crumbled
  • ½ g ground white pepper, finely ground

court-bouillon poaching broth

  • 800 ml water
  • 250 ml dry white wine
  • 1 fresh lemon, sliced into 5 mm rounds
  • 1 shallot, peeled and thinly sliced
  • 3 fresh tarragon, whole sprigs with stems
  • 3 fresh dill, whole sprigs with stems
  • 1 dried bay leaf, whole dried leaf
  • 3 g black peppercorns, whole
  • 8 g fine sea salt

fish

  • 4 atlantic salmon fillet, skinless, boneless centre-cut fillets

Nutrition (per serving)

Nutrition is estimated per serving. Nutrients without complete source data are omitted.

461
Calories
31g
Protein
1g
Carbohydrates
36g
Fat
324mg
Sodium
Full nutrition
Calories
461 kcal
Protein
31 g
Carbohydrates
1 g
Fat
36 g
Sodium
324 mg
Saturated Fat
15 g

Sources: Aggregated Public Data, USDA FoodData Central

Method

01

In a small mixing bowl, combine 80 g softened unsalted butter, 5 g chopped tarragon, 5 g minced chives, 2 g lemon zest, 5 ml lemon juice, 2 g flaky sea salt, and 0.5 g ground white pepper using a fork until smooth and uniform.

3m
02

Transfer the seasoned butter onto a sheet of parchment paper, fold the edge over, and roll it firmly into a tight log approximately 3 cm in diameter.

2mLook for: Uniform cylinder with smooth outer surface enclosed in paperFeel: Compact cylinder with no interior air pockets
03

Transfer the wrapped butter log to the refrigerator to chill until completely firm and sliceable.

15mFeel: Solid and resistant to gentle finger pressure
04

In a deep wide skillet with lid, combine 800 ml water, 250 ml dry white wine, 1 sliced lemon, 1 sliced shallot, 3 tarragon sprigs, 3 dill sprigs, 1 dried bay leaf, 3 g black peppercorns, and 8 g fine sea salt.

05

Place the skillet over medium heat and bring the court-bouillon liquid to a simmer at 85 C to 90 C (185 F to 194 F) for 10 minutes to extract the herbal aromatics.

10mLook for: Gentle lazy bubbles breaking around the edge of the pan with fragrant steam rising
06

On a clean cutting board, pat the 4 salmon fillets dry with paper towels; wash your hands and immediately sanitize all surfaces that touched raw seafood to prevent cross-contamination.

2m
07

Reduce heat to low to settle broth to 75 C to 80 C (167 F to 176 F), gently lower salmon fillets into the broth in a single layer, cover with the lid, and poach gently.

8m
08

Verify salmon doneness by inserting an instant-read food thermometer horizontally into the thickest core until it reaches the safe minimum temperature of 63 C (145 F), where flesh turns opaque and separates easily with a fork.

Look for: Fillet exterior is opaque coral-pink and flakes cleanly when pressedFeel: Tender yet firm yielding resistance to pressure
09

Carefully lift each salmon fillet from the broth using a slotted fish spatula, holding it over the pan for 3 seconds to drain excess poaching liquid.

1m
10

Set warm dinner plates on the counter, place one drained salmon fillet in the centre of each plate, and unwrap the chilled compound butter on a cutting board.

1m
11

Using a chef knife, slice the cold butter log into 4 equal rounds (approximately 20 g each) and crown each hot fillet with a butter medallion, allowing it to soften and drape glossily over the fish.

1mLook for: Butter edges soften and pool glossily over the crest of each hot fillet

Chef's Notes

  • Submerging salmon in a gentle court-bouillon ensures uniform heat conduction around the fillet without the harsh mechanical agitation of frying or grilling.
  • Acid from the dry white wine and lemon slices stabilizes the muscle proteins during poaching, producing a remarkably tender and clean finish without fishy odor.
  • Always check internal temperature with a calibrated digital probe inserted parallel into the thickest segment of the fillet rather than touching the metal pan bottom.
  • Extra compound butter can be wrapped tightly and kept frozen in individual coin slices to finish seared sea bass, steamed asparagus, or grilled meats.

Storage

Refrigerator: 2 daysStore poached fillets in an airtight container with a shallow splash of strained poaching liquid to retain moisture. Store extra compound butter wrapped tightly in parchment.

Reheating: Reheat leftover salmon gently in a covered dish with 30 ml water or broth at 135 C (275 F) until the internal temperature reaches 74 C (165 F), or serve cold flaked into salads.

Troubleshooting

White curd-like coagulated matter forms heavily on the surface of the salmon

Cause: Poaching liquid was too hot or boiling, causing delicate muscle fibres to rapidly seize and expel albumin

Fix: Gently wipe visible white albumin away with a moist paper towel before topping with compound butter

Prevention: Keep poaching broth strictly between 75 C and 80 C (167 F and 176 F) without turbulent bubbles

Fish flakes and breaks apart while transferring from pan to plate

Cause: The fillet was overcooked past safe flaking point or lifted with a narrow, flexible tool rather than supporting the entire length

Fix: Arrange separated fish flakes neatly in shallow bowls, drizzle melting compound butter across the top, and present as a rustic preparation

Prevention: Remove the fish promptly once it registers 63 C (145 F) and support the whole underside with a wide slotted fish spatula

Compound butter melts immediately into an oily, separated liquid slick rather than a creamy coating

Cause: Compound butter was not chilled long enough to fully firm, or the fillet exterior was boiling hot from overcooking

Fix: Swirl the warm puddle on the plate with a fork and a few drops of hot poaching liquid to quickly reform a light emulsion

Prevention: Chill compound butter for at least 15 minutes until firm to the touch and drain fillets briefly before garnishing

Cultural Context

Poaching seafood in court-bouillon is an iconic technique of French culinary tradition designed to respect and enhance delicate river and marine fish. The fragrant broth imparts balanced aromatics while preserving delicate natural oils without heavy caramelization. Completing the warm fish with a classical beurre compose creates a luxurious sensory interplay between warm, silky salmon and melting, herbaceous butter.

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