Why it works: Lemon and pepper 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 for Fish
Ingredients
Directions
Make the base
Heat the butter in a saucepan.
Add the flour and mix well.
Slowly add the boiling water while stirring.
Finish the sauce
Remove from heat and stir in the beaten yolks.
Return to the stove but do not boil.
Add lemon juice, salt, and red pepper to taste.
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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Lemon + peppertop 3% of all pairsAroma overlapstrongMentioned together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + flourtop 12% of all pairsAroma overlaplowMentioned together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + eggtop 15% of all pairsAroma overlaplowMentioned together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + lemontop 16% of all pairsAroma overlapmoderateMentioned together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Flour + lemontop 17% of all pairsAroma overlapmoderateMentioned together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour share little aroma chemistry, yet 124,287 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 fat for richness and a smooth, silky mouthfeel to the sauce.
- Flour
- Thickens the liquid as its starch swells in the hot water, giving body to the sauce.
- Egg yolks
- Emulsify the butter and thicken the sauce as their proteins set gently with heat.
- Lemon juice
- Adds acidity that brightens the rich butter and egg flavor.
The step that matters
Return to the stove but do not boil.. Egg yolks thicken through gentle heat, but if the sauce gets too hot they overcook and scramble, leaving it grainy and curdled instead of 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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