Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 27,047 recipes mention both. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Hollandaise Sauce
Ingredients
Directions
Prepare the base
Beat the butter until creamy.
Add the egg yolks one at a time, mixing well after each addition.
In a separate bowl, combine the lemon juice, cayenne pepper, and salt.
Place this bowl over a saucepan of boiling water.
Make the sauce
Beat the mixture with an egg beater until it begins to thicken, about 1 minute.
Gradually add the boiling water while continuing to beat.
Stir until the sauce thickens to a soft custard consistency.
Remove from heat and stir for a few more minutes, being careful not to overcook.
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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Pepper + lemontop 3% of all pairsAroma overlapstrongMentioned together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + lemontop 16% of all pairsAroma overlapmoderateMentioned together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + eggtop 17% of all pairsAroma overlapmoderateMentioned together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Egg + lemontop 19% of all pairsAroma overlaplowMentioned together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Butter + peppertop 21% of all pairsAroma overlapmoderateMentioned together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Egg and lemon share little aroma chemistry, yet 44,316 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
- Butter
- Adds richness and a smooth, silky mouthfeel to the emulsified sauce.
- Egg yolks
- Emulsify the butter and water and thicken the sauce into a custard as they cook.
- Lemon juice
- Adds acidity that balances the richness of the butter and yolks.
- Boiling water
- Loosens the mixture and helps it emulsify into a smooth, pourable sauce.
The step that matters
Thickening over the water bath. Egg yolks set into a custard at a gentle heat, and overheating them can scramble the eggs or cause the sauce to split. Beating constantly and removing the bowl from heat once thickened keeps the sauce smooth.
“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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