Knorr Bearnaise Sauce Recipe: Rich and Velvety French Classic

This classic French sauce brings restaurant-quality elegance to your home kitchen. A velvety blend of butter, egg yolks, and tarragon creates the perfect rich, tangy accompaniment.

The secret lies in precise temperature control and proper emulsification. This timeless creation elevates steak, fish, or vegetables with its smooth, luxurious finish.

Ingredients for Knorr Bearnaise Sauce

A handful of rich ingredients transform into this velvety French masterpiece. Short list, big impact.

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The butter is everything here. Plugrá or European-style has that higher fat content you want for a silky finish. I grab mine from Whole Foods—their store brand is solid. The tarragon needs to be fresh; dried just doesn’t cut it for that bright, anise-like punch. Look for vibrant green leaves at the market (the good stuff, not the wilted bunches). Shallots add that subtle sweetness—don’t swap for regular onions unless you’re in a pinch.

No shallots? Minced red onion at half the amount works. Out of tarragon? A mix of dried tarragon at one-third the amount plus a pinch of dried dill gets you close. The wine vinegar is non-negotiable for that tangy backbone, but if you’ve only got red wine vinegar, it’ll do (just cut back by half). Trader Joe’s has a great tarragon vinegar that’s perfect for this.

Béarnaise doesn’t keep forever. Use within 2 days in the fridge—any longer and the emulsion breaks. Freezing? Not ideal, but you can pull it off for 1 month if you whisk in a splash of warm water when reheating. Always store in a glass jar (plastic absorbs the flavors).

Step-by-Step Instructions for Bearnaise Sauce

This classic French sauce comes together with careful temperature control and patience.

Step 1: Reduce the Aromatic Base

Combine the 2 tbsp Shallots, 2 tbsp White Wine Vinegar, 2 tbsp Dry White Wine, 1 tbsp Fresh Tarragon, 1 tsp Fresh Chervil, 0.25 tsp Salt, and 0.125 tsp White Pepper in a small saucepan. Bring to a gentle simmer over medium heat.

Cook until the liquid reduces by half and the shallots become translucent—this takes about 5-7 minutes. You’ll know it’s ready when the mixture looks syrupy and smells intensely aromatic. Strain through a fine-mesh sieve, pressing on the solids to extract all flavor. Discard the solids and set the reduction aside to cool slightly.

Step 2: Clarify the Butter

Melt the 1 cup Unsalted Butter in a small saucepan over low heat. Once fully melted, let it sit undisturbed for 3-4 minutes until the milk solids settle at the bottom and the liquid on top turns clear.

Carefully pour the clear, golden liquid (the clarified butter) into a separate container, leaving the milk solids behind. Keep the clarified butter warm but not hot—it should be around 120-140°F for the next step. Discard the milk solids or save them for another use.

Step 3: Temper the Egg Yolks

In a heatproof bowl, whisk the 3 whole Egg Yolks with the 1 tsp Lemon Juice until pale and slightly thickened. Place the bowl over a pot of barely simmering water (double boiler method), ensuring the bottom of the bowl doesn’t touch the water.

Whisk constantly for 1-2 minutes until the yolks warm slightly and thicken enough to leave a ribbon-like trail when the whisk is lifted. Remove the bowl from the heat immediately if the mixture starts to look grainy or scrambled—this means it’s overheating.

Step 4: Emulsify the Sauce

With the bowl off the heat, begin adding the warm clarified butter a few drops at a time, whisking constantly. This slow addition is crucial for creating a stable emulsion. As the sauce begins to thicken, you can add the butter in a thin, steady stream while continuing to whisk vigorously.

If the sauce becomes too thick or starts to separate, whisk in 1 tsp of warm water to bring it back together. Once all the butter is incorporated, the sauce should be thick, creamy, and pale yellow. Taste and adjust seasoning if needed, though the reduction should provide enough flavor.

Step 5: Finish and Serve

Stir in any remaining strained reduction from Step 1, if you have it. The sauce is now ready to serve but must be kept warm. Place the bowl back over the double boiler on low heat to maintain warmth, stirring occasionally.

Béarnaise sauce is best served immediately over grilled meats, fish, or vegetables. If it sits too long, it may thicken or separate—simply whisk in a splash of warm water to revive it. The finished sauce should coat the back of a spoon with a velvety, glossy texture.

Flavor Customization for This knorr bearnaise sauce

Herb Variations

Swap fresh tarragon for dill or basil for a different herbal note. I love dill with grilled salmon—it pairs beautifully. For a more earthy profile, try 1 tsp fresh thyme combined with ½ tsp rosemary. 🌿

Citrus Twist

Add 1 tsp orange zest to the reduction for a bright, citrusy lift. It’s a trick I picked up from a coastal French bistro. The zest complements the butter perfectly. Alternatively, lime juice works if you’re serving with seafood.

Spicy Kick

For heat, stir in ½ tsp cayenne pepper or 1 tsp sriracha to the finished sauce. This works wonders with grilled steaks. I’ve even added a dash of smoked paprika for a subtle, smoky depth. 🔥

Umami Boost

Add 1 tsp Worcestershire sauce to the reduction for a deeper, savory flavor. It’s a classic move in many professional kitchens. For a mushroom twist, sauté 2 tbsp finely chopped mushrooms with the shallots.

Creamy Variation

For extra richness, whisk in 2 tbsp crème fraîche at the end. This makes the sauce even more velvety. I sometimes add 1 tbsp grated Parmesan for a French-Italian fusion.

Light Option

Replace half the butter with olive oil for a lighter version. The flavor changes slightly but still delivers that luxurious mouthfeel. Use a high-quality extra-virgin olive oil for best results.

Frequently Asked Questions