Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Sauce Hollandaise
Ingredients
Directions
Make the reduction
Combine salt, mignonette pepper, vinegar, and water in a small saucepan.
Reduce the mixture by three‑quarters over heat.
Move the saucepan to the side of the heat.
Emulsify the sauce
Add a spoonful of fresh water and the egg yolks.
Whisk until the yolks thicken to a cream‑like consistency.
Remove the saucepan to a warm place.
Gradually pour in the melted butter while stirring briskly.
Once the butter is absorbed, the sauce should be thick and firm.
Adjust consistency with a little water if desired.
Finish and strain
Finish with a drop of lemon juice.
Strain through a fine sieve.
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 their aromas overlap, and how often cooks already put them together.
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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Egg and lemon barely smell alike, yet cooks put them together in 44,316 recipes: they 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
- Butter
- Provides fat that gives the sauce its rich body and smooth mouthfeel.
- Egg yolks
- Their proteins set around the emulsified butter, thickening and stabilising the sauce.
- Vinegar
- Adds acidity that brightens the flavour and helps keep the emulsion stable.
The step that matters
Gradually pour in the melted butter while stirring briskly. Adding butter too fast or without constant whisking can overwhelm the yolks, so the fat separates instead of forming a smooth emulsion. Slow addition and steady stirring let the yolk proteins surround the fat droplets, keeping the sauce thick and creamy.
“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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