Châteaubriand Sauce

Ingredients

Equipment Needed

• •1-quart (1-liter) heavy saucepan or saucier
• •2-cup (500-ml) heatproof measuring jug
• •Fine-mesh sieve
• •Damp cheesecloth
• •Small balloon whisk
• •Warmed sauceboat

Instructions

1. 1

   Set the station

   Measure the wine and veal gravy separately. Set a heatproof measuring jug beside the stove, place a fine-mesh sieve lined with damp cheesecloth over a clean small saucepan, and divide the Butter à la Maître d’Hôtel (No. 150) into eight pieces. Keep the butter cool but pliable. Once the mounting begins, everything must be within reach.

2. 2

   Reduce the wine

   Combine the shallots, thyme, bay, mushroom parings, and white wine in a one-quart heavy saucepan. Bring to a lively boil over medium-high heat and reduce until the wine has almost disappeared, about 8 to 10 minutes. The shallots should look glazed and only a spoonful of syrupy moisture should remain. Do not let the aromatics brown; if the pan goes dry before they soften, add one tablespoon of water and continue. If anything blackens, begin again, because burnt shallot follows a sauce all the way to the table.

   Use a narrow pan. A broad skillet evaporates too abruptly at this quantity and leaves the shallots scorching around the edges before the reduction is ready.
3. 3

   Concentrate the gravy

   Add the veal gravy and scrape the pan clean as it comes back to the boil. Reduce briskly until the liquid measures ½ cup plus 1 tablespoon (140 ml), about 12 to 18 minutes. The bubbles will grow wider and slower, and the sauce will leave a clear trail when a spoon crosses the pan. Check by pouring it into the measuring jug, then return it to the pan if it needs further reduction. If it has fallen below 140 ml, restore the measure with a spoonful of veal gravy, not water, so the foundation remains intact.

4. 4

   Strain it clear

   Pour the reduction through the prepared sieve into the clean saucepan. Let it drain, then press the aromatics only lightly; forcing the mushroom parings through will cloud the sauce. Scrape the concentrated liquid from the underside of the sieve into the pan. Warm it just until thoroughly hot, then remove the saucepan from the burner and set it on a folded towel so it cannot slide.

5. 5

   Monter au beurre

   Monter au beurre, whisk in the butter off the heat, one piece at a time. Add each piece of Butter à la Maître d’Hôtel (No. 150) only when the last has nearly disappeared. The sauce should thicken, gleam, and fall from the whisk in a smooth ribbon without bubbling. If the pan cools before the butter melts, nest its base briefly in warm water, never over direct flame. If yellow fat begins to pool or the sauce turns greasy, stop adding butter. Put 1 teaspoon of cold water in a clean warm bowl, whisk in a spoonful of the broken sauce until smooth, then incorporate the remainder gradually. Ça se rattrape.

6. 6

   Finish and serve

   Fold in the chopped tarragon, if using, and taste without returning the sauce to the heat. The veal gravy and Butter à la Maître d’Hôtel (No. 150) should already carry the seasoning. Spoon the Sauce Châteaubriand over thick slices of grilled fillet of beef, or send it to the table in a warmed sauceboat. If it must wait, hold it for no more than 10 minutes over barely warm water and whisk occasionally. À table!

Chef Tips

• •The veal gravy must be gelatin-rich and only lightly salted, because reducing it by half concentrates every grain of salt. A good refrigerated or frozen veal gravy is the honest home answer; if using commercial veal demi-glace, dilute it to light-gravy strength before measuring.
• •Mushroom parings are clean stems and neat trimmings, not dirt-covered peelings. The classical sauce station used them because good flavor should not be thrown away. Whole button or cremini mushrooms may be trimmed expressly for the sauce, with the caps kept for another dish.
• •Use a dry, restrained white wine. Heavy oak or noticeable sweetness grows coarse under reduction, while a plain dry wine leaves the shallot, mushroom, and veal foundation clear.
• •Butter à la Maître d’Hôtel (No. 150) is a finished referenced preparation, not plain butter with herbs scattered in afterward. Its parsley, lemon, and seasoning complete the sauce, so reach for the prepared component whole.
• •Serve with a grilled center-cut fillet and potatoes ready to catch the sauce. A structured red Bordeaux suits the beef, but keep the white wine used in the pan dry and modest.

Advance Preparation

• •The sauce may be prepared through the straining step one day ahead. Cool and refrigerate the reduction, then warm it gently and mount it with the butter immediately before serving.
• •Butter à la Maître d’Hôtel (No. 150) may be prepared in advance according to its own entry and kept chilled. Let the measured portion become cool and pliable before mounting.
• •Do not complete the butter mounting far in advance. Direct reheating can split the emulsion; finish it while the grilled beef rests and bring both to the table together.

Frequently Asked Questions

Nutrition Information

1 serving (about 60g)