Chef Juliette
Shad
Alose grillée teaches the discipline of fire: score the famously bony fish close to the backbone, grill it over steady coals, and finish its rich flesh with parsley-lemon butter.
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The Cooking of Fish au Gratin
Created by Chef Juliette
Based on No. 782, The Cooking of Fish au Gratin, from Le Guide Culinaire (1907) by Auguste Escoffier
Small sole, mushroom-shallot duxelles, buttered raspings, and fierce heat meet in one gratin, teaching the essential balance: the fish cooks exactly as the sauce reduces and the crust bronzes.
Main Dishes
French
Comfort Food
Dinner Party
20 min
Active Time
15 min cook•35 min total
Yield4 servings
Poissons au Gratin Complet (small fish cooked under a duxelles crust) teaches one exacting lesson: the fish, the reduction of its sauce, and the formation of the gratin must finish together. That coincidence is the dish. Too much sauce leaves a watery bed beneath cooked fish; too little disappears before the flesh is ready, and adding more later makes a patchwork crust.
The original method assumed a saucier tending the reduction, stock never off the fire, and a salamander applying fierce direct heat at the finish. At home, prepare one four-serving quantity of Complete Gratin (No. 269), use a shallow dish over a heated baking sheet, and let the upper oven and a brief pass beneath the broiler do the salamander's work. The brigade's separate hands were scaffolding and can go. The proportions of fish, sauce, raspings, and real butter must stay, because they are the gratin itself. One cook, one stove, one evening.
Small fish want fierce heat and a measured coating. When it works, the sole remains pearly and moist against its bones, the sauce clings rather than floods, and the surface wears a crisp, butter-gold crust freckled with mushrooms and parsley. The one step that matters most is matching the amount of Complete Gratin (No. 269), and the force of the oven, to four fish of equal size.
Poissons au gratin complet belongs to the classical Paris kitchen's family of gratins, a method that moved readily into cuisine bourgeoise because small fish, mushrooms, shallots, bread raspings, and butter all meet in one shallow serving dish. The term au gratin does not promise cheese: here the gratin is the crimped crust formed when reduced sauce, raspings, and butter take direct heat together. Its discipline is mathematical rather than regional, with the size of the fish governing both the sauce quantity and the force of the oven.
The technique, the tradition, and the story behind every dish.
Discover Culinary ExplorerIngredients
small whole sole
Quantity
4 fish, about 8 ounces (225 g) each
cleaned, dark skin removed, white skin scraped, and fins trimmed
Complete Gratin
Quantity
1 home-scale preparation Complete Gratin (No. 269), scaled to coat 4 small fish
| Ingredient | Quantity |
|---|---|
| small whole solecleaned, dark skin removed, white skin scraped, and fins trimmed | 4 fish, about 8 ounces (225 g) each |
| Complete Gratin | 1 home-scale preparation Complete Gratin (No. 269), scaled to coat 4 small fish |
Equipment Needed
- •14 by 10 inch (35 by 25 cm) shallow gratin dish
- •Heavy rimmed baking sheet
- •Wide fish slice or flexible fish spatula
- •Instant-read thermometer
- •Small sheet of aluminum foil for shielding
Instructions
- 1
Set the direct heat
Set a rack in the upper third of the oven and heat it to 450°F (230°C). Place a heavy rimmed baking sheet on the rack as the oven heats; the hot metal gives the shallow gratin dish immediate bottom heat while the upper elements bronze its surface. Have the broiler ready, but do not use it yet.
- 2
Dry the fish
Run clean fingers over each fish to check for stray scales, then dry the skin and cavities thoroughly. Keep the sole cold until the gratin is ready for assembly. A wet fish releases unnecessary liquid, and unnecessary liquid breaks the balance between cooking and reduction before the dish has properly begun.
Ask the fishmonger to clean and skin the sole, but inspect it yourself. Any dark skin left behind contracts in the oven and can pull a small fish out of shape. - 3
Assemble the gratin
Bring the home-scale preparation of Complete Gratin (No. 269) to its assembly point according to its own entry. Use the four sole as its principal item, arranging them head-to-tail in one snug layer so each fish receives the same depth of sauce and topping. Complete the assembly exactly as directed. Do not add extra sauce for generosity and do not heap the raspings over the thin tails; generosity here means balance, not excess.
- 4
Finish all three
Set the gratin dish on the heated baking sheet and bake for 10 to 14 minutes without opening the oven during the first 8. The dish is ready when the sauce bubbles thickly at the rim, the raspings have bronzed through their butter, and the fish reaches 145°F (63°C) beside the backbone without the thermometer touching bone. Test all three signs together. If the crust bronzes before the fish is cooked, lower the oven to 400°F (205°C), shield only the darkest patches with foil, and continue gently. If the fish is ready but the surface is pale, place it about 6 inches (15 cm) beneath the broiler for 20 to 60 seconds. Watch without looking away. Ça se rattrape.
If the fish is cooked while loose sauce still floods the dish, lift the fish and its crust carefully onto a warm platter. Reduce only the loose sauce in a wide pan until it clings, then spoon it around the fish, never over the crust. - 5
Finish and serve
At the moment the dish leaves the oven, apply the lemon-and-parsley finish prescribed in Complete Gratin (No. 269). Let the gratin settle for 2 minutes, no longer, then bring the whole dish to the table. The sauce should make a narrow glossy pool around the fish while the crust remains crisp above it. Serve each sole with a broad fish slice so its coating travels with it. À table!
Chef Tips
- •Choose four fish as close to the same weight and thickness as possible. Sole is the baseline here; small whiting or red mullet also follow the source faithfully, but use one species in the dish so everything finishes together.
- •Use a gratin dish that holds the fish snugly in one layer. Too broad a dish spreads the sauce thin and reduces it before the fish cooks; too cramped a dish leaves the sauce deep and watery when the crust is already brown.
- •A larger fish needs gentler heat and more time, while these small sole need the fierce oven given here. Do not merely double the cooking time for a large specimen; the sauce quantity and heat must be recalculated with it.
- •Serve immediately. A gratin waits badly because its reduced sauce continues soaking the raspings. Leftovers remain good fish, but they will not retain the precise contrast that defines this preparation.
- •Pour a dry white with brisk acidity, such as Muscadet or Chablis. It should clear the butter from the palate without bullying the sole or the mushrooms.
Advance Preparation
- •Have Complete Gratin (No. 269) prepared to its assembly point before beginning this entry, following its own advance directions. Keep its elements separate until the oven is hot and the fish is ready.
- •The fish can be cleaned, skinned, trimmed, and dried up to 6 hours ahead. Set it on a rack over a tray, cover loosely, and keep it in the coldest part of the refrigerator.
- •Do not assemble the gratin in advance. Salt and sauce draw moisture from the fish, while buttered raspings soften as they wait; cooking, reduction, and crust must begin together.
Frequently Asked Questions
Nutrition Information
1 serving (about 260g)
Calories
320 calories
Total Fat
17 g
Saturated Fat
9 g
Trans Fat
0 g
Unsaturated Fat
7 g
Cholesterol
90 mg
Sodium
620 mg
Total Carbohydrates
14 g
Dietary Fiber
1 g
Sugars
2 g
Protein
27 g
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