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Best Buttermilk Substitute in Hollandaise Sauce

The best substitute for Buttermilk in Hollandaise Sauce is Lemon Juice and Milk because it replicates the acidity and slight thickness of buttermilk, which is essential for balancing the richness and helping emulsification.

Last Reviewed March 25, 2026
Reviewer IngredientSwap Culinary Team
Methodology Data-driven analysis & culinary science review

Top 5 Buttermilk Substitutes for Hollandaise Sauce

Substitute Ratio
Lemon Juice and Milk Best 1 tablespoon lemon juice + enough milk to make 1/4 cup Adds acidity and slight thickness similar to buttermilk without overpowering the sauce.
Gluten-FreeNut-Free
White Vinegar and Milk 1 tablespoon white vinegar + enough milk to make 1/4 cup Provides acidity similar to buttermilk but with a slightly sharper tang.
Gluten-FreeNut-Free
Sour Cream Thinned with Water 3 tablespoons sour cream + 1 tablespoon water Adds acidity and creaminess but can slightly thicken the sauce.
Gluten-FreeNut-Free
Plain Kefir 1/4 cup kefir per 1/4 cup buttermilk Naturally acidic and similar in texture, but with a distinct fermented flavor.
Gluten-FreeNut-Free
Non-Dairy Yogurt (Soy or Coconut) Thinned with Water 3 tablespoons non-dairy yogurt + 1 tablespoon water Provides acidity but may affect flavor and texture noticeably.
VeganGluten-FreeDairy-FreeNut-Free

Deeper Dive: Using Buttermilk Substitutes in Hollandaise Sauce

What Actually Happens in Practice?

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Common Mistakes to Avoid

How Results Can Vary

Edge Cases & Exceptions

Detailed Guide: Each Buttermilk Substitute in Hollandaise Sauce

Lemon Juice and Milk

Gluten-FreeNut-Free
1 tablespoon lemon juice + enough milk to make 1/4 cup
Quick tip: Adds acidity and slight thickness similar to buttermilk without overpowering the sauce.

Lemon juice acidifies the milk, creating a similar pH and slight curdling effect as buttermilk, which helps balance the richness of the egg yolks and butter in Hollandaise. This acidity also aids in stabilizing the emulsion.

For best results, let the lemon juice and milk mixture sit for 5 minutes before use to allow curdling. Use whole milk for a closer texture match, but low-fat milk can be used if preferred.

Compared to buttermilk, this substitute maintains the classic tang and smooth texture of Hollandaise without introducing additional flavors, keeping the sauce light and balanced.

White Vinegar and Milk

Gluten-FreeNut-Free
1 tablespoon white vinegar + enough milk to make 1/4 cup
Quick tip: Provides acidity similar to buttermilk but with a slightly sharper tang.

White vinegar acidifies milk similarly to lemon juice, producing a mild curdling effect that mimics buttermilk's acidity and texture. This acidity is crucial for balancing the fat content and aiding emulsification in Hollandaise.

Allow the mixture to rest for 5 minutes before adding to the sauce to ensure proper acidification. Use whole milk for best texture.

The sharper vinegar tang can be slightly more pronounced than buttermilk, so use sparingly to avoid overpowering the sauce's delicate flavor.

Sour Cream Thinned with Water

Gluten-FreeNut-Free
3 tablespoons sour cream + 1 tablespoon water
Quick tip: Adds acidity and creaminess but can slightly thicken the sauce.

Sour cream contains lactic acid and a creamy texture similar to buttermilk, which helps balance the richness of Hollandaise and supports emulsification. Thinning it with water adjusts the consistency closer to buttermilk.

Mix thoroughly to ensure smoothness and avoid lumps. Use fresh sour cream to prevent off-flavors.

This substitute may slightly thicken the sauce and add a tangier flavor, which can enhance or alter the traditional Hollandaise profile depending on preference.

Plain Kefir

Gluten-FreeNut-Free
1/4 cup kefir per 1/4 cup buttermilk
Quick tip: Naturally acidic and similar in texture, but with a distinct fermented flavor.

Kefir is a fermented milk product with acidity and a consistency close to buttermilk, making it a functional substitute that supports emulsification and flavor balance in Hollandaise.

Use plain, unsweetened kefir to avoid altering the sauce's taste. Stir well before measuring.

The fermented notes may impart a subtle tangier and more complex flavor compared to buttermilk, which can be desirable or distracting depending on the dish.

Non-Dairy Yogurt (Soy or Coconut) Thinned with Water

VeganGluten-FreeDairy-FreeNut-Free
3 tablespoons non-dairy yogurt + 1 tablespoon water
Quick tip: Provides acidity but may affect flavor and texture noticeably.

Non-dairy yogurts contain acids that can mimic buttermilk's tang and help with emulsification, but their base ingredients and textures differ significantly from dairy, which can impact the sauce.

Choose plain, unsweetened varieties and thin with water to approximate buttermilk's consistency. Be cautious of added stabilizers or flavors.

This substitute may introduce a slight coconut or soy flavor and a different mouthfeel, which can alter the traditional Hollandaise experience, but it is suitable for dairy-free diets.

Vegan Buttermilk Substitutes for Hollandaise Sauce

Full Vegan guide →
Non-Dairy Yogurt (Soy or Coconut) Thinned with Water
Ratio: 3 tablespoons non-dairy yogurt + 1 tablespoon water

Provides acidity but may affect flavor and texture noticeably.

Gluten-Free Buttermilk Substitutes for Hollandaise Sauce

Full Gluten-Free guide →
Lemon Juice and Milk
Ratio: 1 tablespoon lemon juice + enough milk to make 1/4 cup

Adds acidity and slight thickness similar to buttermilk without overpowering the sauce.

White Vinegar and Milk
Ratio: 1 tablespoon white vinegar + enough milk to make 1/4 cup

Provides acidity similar to buttermilk but with a slightly sharper tang.

Sour Cream Thinned with Water
Ratio: 3 tablespoons sour cream + 1 tablespoon water

Adds acidity and creaminess but can slightly thicken the sauce.

Plain Kefir
Ratio: 1/4 cup kefir per 1/4 cup buttermilk

Naturally acidic and similar in texture, but with a distinct fermented flavor.

Non-Dairy Yogurt (Soy or Coconut) Thinned with Water
Ratio: 3 tablespoons non-dairy yogurt + 1 tablespoon water

Provides acidity but may affect flavor and texture noticeably.

Dairy-Free Buttermilk Substitutes for Hollandaise Sauce

Full Dairy-Free guide →
Non-Dairy Yogurt (Soy or Coconut) Thinned with Water
Ratio: 3 tablespoons non-dairy yogurt + 1 tablespoon water

Provides acidity but may affect flavor and texture noticeably.

What NOT to Use as a Buttermilk Substitute in Hollandaise Sauce

✗ Regular Milk

Regular milk lacks the necessary acidity to mimic buttermilk, which can result in a less balanced Hollandaise with a flat flavor and potentially hinder proper emulsification.

✗ Yogurt

While yogurt is acidic, its thicker texture and tanginess can overpower the delicate flavor of Hollandaise and may cause the sauce to become too thick or grainy.

✗ Cream

Cream is too rich and lacks acidity, which can make the Hollandaise overly heavy and unbalanced, failing to provide the necessary tang that buttermilk imparts.

Sources & Methodology

Cross-referenced against USDA FoodData Central nutritional data and peer-reviewed culinary science publications. Source URLs verified as of the sources_verified_date.

Need to substitute other ingredients in Hollandaise Sauce?

All substitutes for Hollandaise Sauce →

Buttermilk Substitutes in Other Recipes

View all Buttermilk substitutes →

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