Bearnaise Sauce Recipe Blender: Silky Emulsion with Tarragon Infusion

This blender béchamel delivers silky, restaurant-quality results with minimal effort. The immersion method creates a stable emulsion that won’t separate.

Tarragon’s anise-like notes blend perfectly with shallots and white wine vinegar for that classic French flavor in a fraction of the traditional time.

Ingredients for Bearnaise Sauce Recipe Blender

Nine ingredients transform into a silky, tarragon-infused French classic with minimal effort.

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The vinegar and wine reduction forms the foundation. Use high-quality white wine vinegar—tarragon vinegar if available—for authentic flavor. Shallots (not onions) are essential for that delicate, sweet allium note. Find them near the garlic at most Whole Foods or specialty grocers. The butter must be unsalted; salted can throw off the seasoning balance. For professional results, European-style butter (82% fat) creates the most stable emulsion.

No tarragon? Dried tarragon at one-third the amount works, though fresh is vastly superior. Out of white wine? Dry vermouth or additional vinegar with a pinch of sugar substitutes well. For a non-alcoholic version, white wine vinegar plus water mimics the acidity. The egg yolks are non-negotiable—they’re the emulsifier. If concerned about raw eggs, use pasteurized yolks from brands like Safest Choice.

Béarnaise separates if chilled then reheated. Keep warm in a thermos or over a pot of warm water for up to 2 hours. Store leftovers in the fridge for 1-2 days, but expect some separation upon reheating. Stir vigorously with a spoonful of warm water to restore.

Step-by-Step Instructions for Bearnaise Sauce

Master the classic French technique using your blender for foolproof emulsification every time.

Step 1: Infuse the Reduction with Aromatics

Combine the 2 tbsp White Wine Vinegar, 2 tbsp Shallot, 1 tbsp Fresh Tarragon, 2 tbsp Dry White Wine, 0.5 tsp Kosher Salt, 0.125 tsp Cayenne Pepper, and 0.25 tsp Black Pepper in a small saucepan. Simmer over medium heat for 5-7 minutes until the liquid reduces by half and the shallots become translucent.

This reduction concentrates the flavors and mellows the shallots. You want the mixture syrupy enough to coat the back of a spoon but not so dry it burns. Remove from heat and let cool slightly—adding hot liquid to egg yolks would scramble them.

Step 2: Melt and Cool the Butter

While the reduction cools, melt the 1 cup Unsalted Butter in a small saucepan over low heat or in the microwave in 20-second bursts. Allow it to cool slightly—it should be warm but not hot enough to cook the egg yolks on contact.

The butter needs to be liquid but not sizzling. I test it by touching my wrist to the side of the pan—if it’s comfortable, it’s ready. Separating the butter into its milk solids and clear fat isn’t necessary for this blender method, but skimming off any foam that rises to the top ensures a cleaner flavor.

Step 3: Blend the Base Emulsion

Add the 3 whole Egg Yolks and the slightly cooled reduction to your blender. Blend on medium-high speed for 20-30 seconds until the mixture is pale, thick, and doubled in volume. This step incorporates air, which helps stabilize the emulsion.

You’re looking for a ribbony texture that falls from the blender blade in thick ribbons. If the mixture looks thin or watery, blend for another 10 seconds—the yolks need to be fully emulsified before adding the butter. This creates the foundation that will hold the sauce together.

Step 4: Slowly Emulsify with Melted Butter

With the blender running on low speed, very slowly drizzle in the melted 1 cup Unsalted Butter through the feed tube. This should take 1-2 minutes total. The slow addition is critical—adding it too quickly will break the emulsion.

Watch the sauce transform from pale yellow to a creamy, off-white color. You’ll hear the blender motor strain slightly as the mixture thickens. If the sauce looks too thick, add 1 tsp warm water to adjust the consistency. The finished sauce should coat the back of a spoon and leave a clean trail when you run your finger through it.

Step 5: Adjust Seasoning and Serve

Taste and adjust the seasoning if needed. The reduction might have concentrated the salt, so add more Kosher Salt sparingly. If you prefer a more pronounced tarragon flavor, finely chop an additional ½ tsp Fresh Tarragon and fold it in by hand.

Use the sauce immediately or keep it warm in a thermos or over a double boiler on low heat for up to 1 hour. If it separates, don’t panic—simply re-blend for 10 seconds to bring it back together. Serve over grilled steaks, fish, or roasted vegetables for an elegant finishing touch.

Serving Suggestions for This Recipe

🥘 Plating Styles

Bearnaise sauce made in a blender is versatile enough for any dining style. For casual meals, drizzle it over grilled steaks or burgers on a rustic wooden board. For formal presentations, use a squeeze bottle to create elegant swirls on a white plate alongside filet mignon or roasted asparagus. At a buffet, serve it in a small slow cooker or chafing dish with a ladle for easy access.

🌿 Garnishing Techniques

Enhance the visual appeal of your bearnaise with simple yet effective touches. Sprinkle fresh chopped tarragon or chives on top for a pop of green. For a gourmet finish, add a drizzle of reduced red wine or balsamic glaze in a zigzag pattern. Edible flowers or a sprinkle of cracked black pepper can also elevate the presentation.

🍽️ Portion Sizes

For individual servings, offer 2-3 tablespoons of bearnaise per person, either in a small ramekin or directly over the main dish. For family-style dining, a 1-cup serving in a shared bowl is ideal for 4-6 people. Adjust portions based on the richness of your meal—bearnaise is bold, so a little goes a long way!

🔥 Serving Temperature

Bearnaise is best served warm but not hot to maintain its silky texture. If the sauce has thickened after resting, gently reheat it in a double boiler or warm water bath, stirring constantly. Avoid microwaving, as it can cause separation. For optimal flavor, let the sauce rest for 5-10 minutes after blending to allow the tarragon and shallots to infuse fully.