Lent Chaud-Froid Sauce

Ingredients

Equipment Needed

• •4-quart broad heavy saucepan or saucier
• •Fine-mesh sieve
• •Large bowl for an ice-water bath
• •Flexible heatproof spatula
• •8-cup heatproof measuring jug
• •Wire rack set over a rimmed tray

Instructions

1. 1

   Prepare the cold station

   Set a broad bowl of ice water beside the stove and place a clean saucepan or metal bowl inside to check that it sits steadily. Melt the white fish jelly over the gentlest heat only until fluid, then keep it barely warm. Prolonged boiling weakens its setting power, so treat it as something to melt, not something to cook.

   If you intend to glaze fish immediately, have it fully cooked, thoroughly chilled, and patted dry before beginning. A damp surface dilutes the first coat and makes it slide.
2. 2

   Reduce the velouté

   Combine the fish velouté and mushroom cooking liquor in a broad, heavy saucepan. Bring them to a steady uncovered simmer and reduce from 6 cups to 4 cups, stirring across the pan floor and into the corners so the velouté cannot catch. Check the volume in a heatproof measure rather than trusting the clock; this first reduction concentrates the fish and mushroom foundation without making it pasty.

3. 3

   Enrich and reduce

   Add the cream gradually, whisking until the sauce is completely smooth. Return it to a gentle simmer and reduce the mixture from 6 cups to 4 cups, stirring frequently, until it reaches nappage, meaning it coats the back of a spoon in an even layer. If it thickens before reaching the proper volume, lower the heat and whisk in hot water a spoonful at a time to replace what evaporated too quickly. If the bottom begins to catch, pour the sauce into a clean pan without scraping the scorched layer. Ça se rattrape, provided the burnt taste hasn't entered the sauce.

4. 4

   Strain and set

   Pass the hot sauce through a fine-mesh sieve into a clean saucepan, pressing gently but never forcing any browned residue through. Off the heat, whisk in the melted white fish jelly until no streaks remain. Taste and add salt only if needed, seasoning a shade more firmly than you would for a warm sauce because chilling quiets flavor.

5. 5

   Cool to glazing point

   Set the pan in the ice-water bowl and stir continuously with a flexible spatula, sweeping the bottom and sides. The sauce will pass from fluid and glossy to lightly thickened, then begin coating the spatula in an opaque ivory film. Test a spoonful on an ice-cold plate: it should settle smoothly without racing toward the rim. If it becomes grainy or sets around the edges, lift it from the ice and whisk; if it has gone too firm, warm it gently over barely warm water until fluid and begin cooling again. Ça se rattrape.

6. 6

   Glaze the fish

   Arrange thoroughly chilled, dry cooked fish fillets, escalopes, or shellfish on a rack over a tray. Spoon or ladle the chaud-froid over each piece in one thin, complete coat, letting the excess fall away. Chill until the surface is set, then add a second fine coat where fuller coverage is wanted. If the sauce firms while you work, loosen it over barely warm water, never direct heat, and return it to the glazing point.

7. 7

   Chill and serve

   Transfer the glazed fish to its serving platter and chill until the coating is fully set. Keep it properly cold until it reaches the table, particularly when shellfish is involved. The finished glaze should be smooth, pale, and supple under the fork, with the flavor of fish velouté more pronounced than any cleared mayonnaise could manage. À table!

Chef Tips

• •The fish velouté and white fish jelly are finished foundations in this preparation, just as the original entry treats them. Make both ahead, then begin the chaud-froid only when they are cold, settled, and correctly seasoned.
• •Mushroom cooking liquor must be pale and cleanly strained. Dark mushroom fond or browned trimmings muddy the ivory color, while gritty liquor survives even the final sieve.
• •A broad saucepan shortens the reduction and gives you better control than a narrow pot. Keep the simmer steady and stir the floor often; cream and velouté scorch quietly before announcing the damage.
• •Cold fish must also be dry fish. Blot every fillet or shellfish portion just before glazing, then apply two thin coats rather than one heavy one. Thin layers set evenly and keep the shape of the food visible.
• •The sauce is generous by necessity. Enough depth makes dipping and ladling clean, and the unused portion can be remelted gently for another cold fish platter.

Advance Preparation

• •Prepare the fish velouté and white fish jelly up to two days ahead and keep them covered in the cold. Melt the jelly gently only when the reduced sauce is ready for it.
• •The completed chaud-froid can be chilled for up to two days with parchment pressed directly against its surface. To use it, warm it over a water bath until fluid, then cool it over ice to the glazing point again.
• •Cook and chill the fish or shellfish earlier on the serving day. Glaze it several hours before the meal, cover without touching the surface, and keep it cold until service.

Frequently Asked Questions

Nutrition Information

1 serving (about 60g)