Béarnaise sauce is one of the great classic sauces of French cuisine, luxuriously smooth and delicate with its distinctive flavors of tarragon and chervil. Perfect for accompanying a steak, grilled fish, or eggs, it will impress your guests with its refined taste and velvety texture. Mastering this sauce is acquiring an essential skill of the French chef.
⏱️25 min
📊Medium
👥4 servings
🍽️Main
vegetarianfestive
Ingredients
2 piècesshallots
50 mlwhite vinegar
1 cuillère à soupefresh tarragon
1 cuillère à soupefresh chervil
3 piècesegg yolks
200 gbutter
1 pincéepepper
1 pincéesalt
0.5 cuillère à cafécayenne pepper
Instructions
1PREPARE THE SHALLOT REDUCTION: Peel and finely mince the 2 shallots very fine. Pour the white vinegar into a small saucepan with the minced shallots, tarragon, and fresh chervil. Reduce over medium heat for 3 to 4 minutes, until the vinegar is almost completely evaporated and you retain only one or two spoonfuls of aromatic reduction. This step is essential for developing the delicate flavors of the sauce.
2PREPARE THE DOUBLE BOILER: Fill a saucepan with boiling water and place a heat-resistant bowl on top, ensuring the bottom of the bowl does not touch the water. This double boiler technique allows gentle and gradual cooking, essential for obtaining a smooth sauce without the eggs cooking too quickly. Verify that the temperature remains around 50-60°C for ideal cooking.
3START THE SAUCE: Pour the cooled shallot reduction into the double boiler bowl, then add the 3 fresh egg yolks. Whisk vigorously for 1 minute to blend the elements well. You will progressively see the mixture take on color and thicken slightly. This is the moment to check the temperature: it must never exceed 65°C, otherwise the eggs risk turning into scrambled eggs.
4INCORPORATE THE BUTTER PROGRESSIVELY: Cut the butter into small cubes and begin adding them one by one, whisking constantly after each addition. Wait for each portion of butter to be perfectly incorporated and emulsified before adding the next. This step takes approximately 4 to 5 minutes and requires patience: this progressive incorporation is what gives the sauce its characteristic velvety and glossy texture. If the sauce begins to thicken too much, you can add a few drops of warm water to thin it.
5SEASON WITH FINESSE: Once all the butter is incorporated and the sauce has the consistency of a light and glossy mayonnaise, add a splash of warm water to make it more pourable if necessary. Season with salt, freshly ground white pepper, and a hint of cayenne pepper for a slight kick. Taste and adjust the seasoning to your preference. The sauce should be fragrant but balanced, without the spices dominating the delicate tarragon flavors.
6FINISHING AND SERVICE: Pass the sauce through a fine sieve or cheesecloth to eliminate shallot pieces and herbs, to obtain the smooth and elegant texture typical of the great French sauces. Keep the sauce warm in a double boiler at approximately 50°C, covering it with plastic wrap to prevent a crust from forming on the surface. Serve immediately with your grilled meat or fish. Béarnaise sauce is best enjoyed still hot and should not be kept for long, as it could separate.