Why it works: Vinegar and pepper are a kitchen classic. They rank in the top 14% of all ingredient pairs, and 27,814 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Hollandaise Sauce
Ingredients
Directions
Prepare
Divide the butter into six equal portions.
Reduce the vinegar with salt and pepper until about 1 teaspoon remains.
Strain the mixture and add water and egg yolks.
Make the sauce
Heat over low flame for 1 minute, stirring with a wooden spoon; do not boil.
Remove from heat and add 1 portion of butter, stirring until melted.
Return to heat for 1 minute, stir well, and repeat until all butter is incorporated.
Add a little water as needed to prevent curdling.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Vinegar + peppertop 14% of all pairsAroma overlapmoderateMentioned together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + eggtop 17% of all pairsAroma overlapmoderateMentioned together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + peppertop 21% of all pairsAroma overlapmoderateMentioned together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + vinegartop 23% of all pairsAroma overlapmoderateMentioned together13,513 recipes
Shared aroma: isoamyl acetate (banana, pear).
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Vinegar + eggtop 33% of all pairsAroma overlaplowMentioned together12,922 recipes
Shared aroma: acetic acid (sour, vinegar).
Vinegar and egg share little aroma chemistry, yet 12,922 recipes mention both: they likely work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify the butter and thicken the sauce as they gently cook.
- Butter
- Provides fat that, emulsified with the yolks, gives the sauce its rich body.
- Vinegar
- Adds acidity that sharpens flavor and helps the sauce hold together.
The step that matters
Heating the yolks over low flame without boiling. Egg yolks begin to thicken with gentle heat but scramble or curdle if they get too hot. Keeping the heat low and stirring constantly lets the yolks thicken smoothly while the butter emulsifies into them.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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