Knorr Béarnaise Sauce Recipe: Classic French Emulsion in Minutes

This Knorr Béarnaise sauce recipe delivers restaurant-quality French elegance without the complexity—just a few simple ingredients and precise technique. The secret lies in whisking egg yolks and vinegar over gentle heat until thickened, then slowly incorporating melted butter to create that signature velvety emulsion.

I’ve perfected this version to stay true to classic Béarnaise while adapting it for home cooks with minimal fuss.

What sets this sauce apart is the balance of rich, buttery depth and bright, tangy vinegar, all tied together with fresh tarragon and shallots. The key steps—reducing the vinegar first, tempering the yolks, and adding butter gradually—ensure a smooth, stable sauce every time.

Unlike traditional recipes that require hours of reduction, this version comes together in under 15 minutes.

Once complete, you’ll have a glossy, golden sauce that clings beautifully to grilled meats, fish, or even roasted vegetables. The aroma alone—herbaceous, slightly sweet, with a hint of acidity—will elevate any dish.

It’s the kind of sauce that transforms a simple meal into something special, all while staying true to the classic French technique.

The best part? This sauce keeps well in the refrigerator for up to 3 days, making it perfect for meal prep. Just reheat gently before serving to restore its silky texture. Whether you’re searing steak or basting asparagus, this Béarnaise will be your go-to for adding sophistication to any plate.

Ingredients for knorr bearnaise sauce

Nine essential ingredients transform into velvety Béarnaise with precise technique and patience.

The extra-virgin olive oil and white wine vinegar form the emulsifying base—opt for dry, aged vinegar to avoid bitterness, and cold-pressed olive oil for stability. Shallots should be finely minced to dissolve into the sauce; fresh tarragon is non-negotiable for authentic flavor, though dried works in a pinch at one-third the amount. For the yolks, room temperature is critical—they emulsify better when warm. Unsalted butter must be cold and cubed to prevent premature melting during the process. Whole Foods or local specialty markets often carry high-quality vinegar and fresh herbs, while Land O’Lakes or Plugrá brands provide reliable butter options.

No white wine vinegar? Apple cider vinegar or rice vinegar can substitute, though the flavor profile shifts slightly. Fresh tarragon unavailable? Dried tarragon at one-third the amount is usable, but fresh basil or thyme can mimic the herbal brightness. For a vegetarian-friendly version, replace butter with vegan butter or olive oil, though the sauce will be lighter. Shallot powder can replace fresh shallots, but the texture will differ. Salt and pepper should be adjusted to taste—Diamond Crystal kosher salt dissolves more easily than table salt, while freshly ground white pepper adds subtle sophistication without overpowering the delicate flavors.

This sauce must be refrigerated immediately after preparation to maintain its emulsion. Store in an airtight container with a thin layer of olive oil on top to preserve freshness for up to 3 days. For longer storage, freeze in ice cube trays—thaw and whisk gently before use. Reheat slowly over a double boiler to prevent curdling, adding a splash of warm water if the sauce thickens too much. Garnish with finely chopped fresh chives just before serving to enhance presentation and add a bright contrast to the rich sauce.

Step-by-step instructions for Béarnaise sauce

Master this classic French emulsion with precise technique and professional results.

In a small saucepan, combine the 0.25 cup white wine vinegar and the 2 minced shallots. Bring to a gentle simmer over medium heat and cook for 5-7 minutes until the liquid reduces by half and the shallots soften completely. This reduction forms the flavor base and removes the vinegar's harshness.

Strain the mixture through a fine-mesh sieve into a clean bowl, pressing gently on the shallots to extract all the liquid. Let it cool to room temperature—this ensures the yolks won't scramble when added later. The cooled reduction should be about 2 tablespoons and have a deep amber color with no visible shallot pieces.

Place the 4 large egg yolks in a heatproof bowl set over a saucepan of barely simmering water (double boiler method). Whisk gently to create a smooth, pale yellow emulsion. Gradually drizzle in the cooled shallot-vinegar reduction while whisking constantly—this process, called tempering, raises the yolks' temperature slowly and prevents curdling.

Continue whisking for 1-2 minutes until the mixture thickens slightly and coats the back of a spoon. The yolks should now be at a temperature where they won't scramble when combined with the hot butter. This tempering step is critical—skipping it risks breaking the emulsion entirely.

Cut the 1 cup unsalted butter into small cubes and place them in a heatproof bowl. Position this bowl over a saucepan of simmering water (again, double boiler) and let the butter melt completely. The water should simmer gently but not boil—this maintains a consistent 160-170°F temperature that won't cook the yolks.

With the yolks still in their bowl, begin adding the melted butter 1 tablespoon at a time. After each addition, whisk vigorously for 10-15 seconds until fully incorporated. The sauce will begin to thicken and take on a creamy, glossy appearance. Work quickly but carefully—this is where the emulsion either succeeds or fails.

Remove the sauce from the heat and stir in the 0.25 cup chopped fresh tarragon and 0.5 teaspoon kosher salt. Let the sauce rest for 2-3 minutes to allow the flavors to meld. The tarragon should be finely distributed throughout—visible chunks will make the sauce uneven in texture.

Taste and adjust seasoning with additional ground white pepper if needed. The sauce should balance tangy, buttery richness with herbal brightness. For a final touch, drizzle in the 0.5 cup extra-virgin olive oil in a thin stream while whisking continuously. This last addition creates the signature silky texture while maintaining the emulsion's stability.

Strain the finished sauce through a fine-mesh sieve into a warm serving bowl to remove any potential lumps or herb stems. The sauce should be thick, glossy, and hold its shape when drizzled—if it's too thin, gently reheat it over simmering water while whisking constantly. Béarnaise sauce is best served immediately on steak, asparagus, or grilled fish while still warm.

For garnish, sprinkle with the 2 tablespoons finely chopped fresh chives just before serving. The chives add a bright contrast to the rich sauce and prevent it from looking too heavy. Remember, this sauce contains raw egg—consume it immediately or refrigerate for up to 2 hours before reheating gently.

Dietary considerations for this dish

Egg Allergy Adaptations

For those with egg allergies, this Béarnaise can be modified using a cornstarch slurry instead of yolks. Mix 1 tablespoon cornstarch with 2 tablespoons cold water and heat it gently until thickened.

Replace the yolks with this slurry in the tempering step, then proceed with the butter incorporation. The texture will be slightly different but still delicious. Always consult your doctor before trying substitutions. 🥚

Vegetarian-Friendly Version

To make this sauce vegetarian, replace the 1 cup unsalted butter with 1 cup olive oil or vegan butter. The emulsion will be lighter but still rich.

For extra stability, whisk in 1 teaspoon lemon juice with the vinegar reduction. This version works beautifully on grilled vegetables or vegan steak alternatives. 🌱

Gluten-Free Considerations

This recipe is naturally gluten-free since it contains no wheat-based ingredients. However, always double-check your vinegar and herb seasonings for hidden gluten additives. Some brands add malt vinegar or wheat-based fillers. Stick to certified gluten-free products to ensure safety. 🌾

Dairy-Free Options

For a dairy-free Béarnaise, substitute the butter with avocado oil or coconut oil (though coconut has a distinct flavor). The sauce will be oil-based but still creamy. Add 1 teaspoon Dijon mustard to help stabilize the emulsion. This version pairs well with grilled fish or roasted vegetables. 🥑

Low-Fat Modifications

To reduce fat while keeping richness, replace half the butter with Greek yogurt or silken tofu. The sauce will have a lighter texture but still hold its flavor.

For example, use ½ cup butter and ½ cup plain Greek yogurt in the final step. This version is perfect for those watching their fat intake. 🥛