Steak Diane, Flamed in Cognac
A high-heat sear and a mushroom-cognac pan sauce that comes together before the steak finishes resting.
By Steven Russell
American
A high-heat sear and a mushroom-cognac pan sauce that comes together before the steak finishes resting.
Steak Diane earned its reputation in the era of tableside carts and flaming pans, but the real magic is how efficient it is. The sauce is built in the same skillet you seared the steak in, using the fond and a splash of cognac, and it is done in the time the meat needs to rest.
The move that scares people, adding cognac to a hot pan, is simple once you respect it. Pull the pan off the heat before the cognac goes in, then return it to the flame to cook off the alcohol and reduce the sauce. You get all the depth without the fireball.
What lifts this from good to steakhouse-great is the finish: Dijon, Worcestershire, and a little cream stirred into the reduced stock. It is savory, glossy, and rich enough to make a home kitchen feel like a chophouse for one night.
Season the steaks generously on both sides with salt and pepper, and let them come toward room temperature if you have the time.
Why Generous seasoning builds the crust, and steaks that are not ice-cold sear more evenly.Heat 1 tablespoon of the butter in a skillet over high heat until it foams and just begins to brown. Sear the steaks 3 to 4 minutes per side for medium-rare, then remove them and let them rest.
Why High heat gives you a deep crust fast, and resting lets the juices redistribute so they stay in the meat instead of running onto the plate.
Lower the heat to medium, add the remaining tablespoon of butter along with the minced shallot and sliced mushrooms, and cook until softened.
Why The mushrooms release their moisture and then brown, concentrating their flavor into the base of the sauce.Remove the pan from the heat and add the cognac. Return it to the heat and let it reduce by half.
Why Pulling the pan off the flame before adding the cognac keeps it from flaring out of control, and reducing it cooks off the raw alcohol edge.Stir in the beef stock, cream, Dijon mustard, and Worcestershire sauce, then simmer until slightly thickened.
Why Simmering marries the ingredients and reduces the sauce to a glossy consistency that coats the back of a spoon.Return the rested steaks to the pan to coat them in the sauce, then plate and top with chopped chives.
Why A quick turn in the sauce warms the steaks back up and glazes them, and the chives add a fresh, sharp finish.
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