Sole aux Huîtres

Ingredients

Equipment Needed

• •35 x 25 cm / 14 x 10 inch broiler-safe gratin dish
• •Oyster knife and cut-resistant glove
• •Fine-mesh sieve with damp cheesecloth or an unbleached coffee filter
• •2 qt / 2 L saucepan
• •Wide saucepan for reducing the cooking liquor
• •Flexible fish slice
• •Instant-read thermometer

Instructions

1. 1

   Prepare fish and fire

   Set an oven rack so the rim of the gratin dish will sit about 5 inches / 13 cm below the broiler later, then heat the oven to 350°F / 180°C. Confirm that the dish can withstand direct broiler heat. Rinse the prepared soles briefly only if necessary, dry them thoroughly, and arrange them in the dish without folding or stacking. A snug fit matters because the oyster liquor must surround the fish rather than disappear across a broad pan.

   Ask the fishmonger to remove the dark skin and trim the fins, but keep the soles whole. Whole fish protects its delicate flesh during poaching and preserves the source entry's presentation.
2. 2

   Open and strain oysters

   Shuck each oyster over a bowl so none of its liquor escapes. Discard any oyster with a cracked shell, an unpleasant odor, or a shell that remained open when tapped before shucking. Lift the oysters into a separate bowl, then pass all their liquor through a fine sieve lined with damp cheesecloth or an unbleached coffee filter into a small saucepan. Expect roughly 3/4 to 1 cup / 180 to 240 ml. Do not rinse the oysters; grit belongs in the filter, not under the tap.

3. 3

   Poach the oysters

   Bring the strained liquor to the barest simmer. Slip in the oysters and poach gently for 1 to 2 minutes, lifting each one as soon as it turns opaque through the center, grows plump, and reaches 145°F / 63°C. A hard boil tightens an oyster before you can blink. Transfer them to a covered bowl, trim away any loose dark frilled beards, and strain the poaching liquor once more.

4. 4

   Poach the soles

   Pour the hot oyster liquor around the soles, spooning a little over their thickest portions. Cover the dish tightly with baking parchment and foil, then shallow-poach in the oven for 10 to 15 minutes. The flesh is ready when it has turned opaque, lifts cleanly from the backbone beside the head end, and reaches 145°F / 63°C at its thickest point. Drain every drop of cooking liquor through the fine sieve into a wide saucepan, keeping the soles in their dish and loosely covered for no longer than 5 minutes.

5. 5

   Reduce and finish sauce

   Taste the sole-and-oyster cooking liquor before reducing it. Simmer briskly until it measures about 1/2 cup / 120 ml, tasting as it concentrates; if the salt is already pronounced, stop sooner. Reserve 1/2 cup / 120 ml of the warm white wine sauce, then whisk the reduced liquor gradually into the remaining sauce over gentle heat until it is nappant, thick enough to coat the back of a spoon. If the salt becomes too strong, fold in the reserved sauce instead of reducing further. If the sauce separates, take it off the heat and whisk in 1 tablespoon / 15 ml of cold water, then rebuild it gradually in a clean warm pan. Ça se rattrape.

   Never season before the oyster liquor has been reduced. Salt can be added at the end, but it cannot be taken out of a concentrated sauce.
6. 6

   Ring, nap, glaze

   Switch the oven to high broil. Arrange six oysters around each sole, forming a generous ring rather than a decorative scattering. Nappez, coat generously, the fish and oysters with the finished sauce, letting it pool lightly around them. Broil for 30 to 90 seconds, rotating the dish if necessary, until the sauce gleams and catches the faintest gold at its highest points. Do not wait for a brown crust; the glaze must be quicker than the fish is delicate. Carry the dish directly to the table. À table!

   Stay beside the broiler with the door closed and the light on. The glaze changes in seconds, and leaving it unattended is the only bit of drama this dish needs.

Chef Tips

• •True Dover sole has fine, firm flesh that remains intact through poaching and glazing. Lemon sole or flounder can follow the method, but their softer texture makes a different dish; ask for small whole fish rather than thick fillets if you want the source entry's proportion and presentation.
• •Buy the oysters from a fishmonger who will preserve every drop of liquor. If they shuck them for you, have the oysters and liquor packed together in a sealed cold container and cook them the same day.
• •The prepared white wine sauce is an inherited component, not cream with wine stirred into it. It must already have enough body to coat a spoon, but keep it slightly looser than its final consistency because the reduced cooking liquor tightens it.
• •Use the oyster liquor as seasoning. Its salinity varies from bed to bed, which is why tasting the reduction matters more than following a rigid volume.
• •Serve with plain pommes vapeur or a restrained rice pilaf to catch the sauce. Pour a lean Muscadet or dry Chablis; either has enough freshness for the oysters without bullying the sole.

Advance Preparation

• •Prepare the white wine sauce up to 1 day ahead, cool it promptly, and refrigerate it covered. Reheat it over gentle heat while the soles poach, whisking in a spoonful of water if it has tightened.
• •The fishmonger can skin and trim the soles earlier the same day. Keep them covered on a rack over a tray in the cold so their surfaces stay dry.
• •The oysters may be shucked up to 2 hours ahead if they remain covered in their liquor at 40°F / 4°C or colder. Strain the liquor only when cooking begins.
• •Do not assemble or glaze the dish ahead. The final ring of oysters, coating of sauce, and broiler glaze belong to the last few minutes before serving.

Frequently Asked Questions

Nutrition Information

1 serving (about 330g)