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 ↓
Asparagus Hollandaise
Ingredients
Directions
Cook the asparagus
Cook asparagus in boiling salted water until soft, leaving tips out of water for the first 10 minutes.
Drain and remove the string from the asparagus.
Serve on a hot dish with Hollandaise sauce.
Make the Hollandaise
Wash the butter in cold water and divide it into three pieces for the Hollandaise sauce.
In a saucepan, combine one piece of butter, egg yolks, and lemon juice.
Place the saucepan in a larger one with boiling water and stir constantly with a wire whisk until the butter melts.
Add the second piece of butter, and as the sauce thickens, add the third piece.
Stir in boiling water, cook for 1 minute, and season with salt and cayenne.
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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Asparagus + lemontop 6% of all pairsSmell alikemoderateCooked together704 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Asparagus + peppertop 10% of all pairsSmell alikemoderateCooked together1,968 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Asparagus + eggtop 17% of all pairsSmell alikemoderateCooked together1,338 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Emulsify with the butter and thicken the sauce as they gently cook.
- Butter
- Provides richness and fat that forms the smooth, creamy body of the sauce.
- Lemon juice
- Adds acidity that brightens the sauce and balances the richness of the butter.
- Asparagus
- Main vegetable; cooking in boiling water softens its fibres until tender.
The step that matters
Heating the egg yolks over boiling water. Yolks thicken as their proteins set, but too much heat scrambles them and the sauce curdles. Gentle, constant whisking over moderate heat keeps the emulsion smooth while the butter is added slowly.
Swap the asparagus
How well each one fits the dish's main ingredients (butter, egg, pepper, lemon):
- Asparagusthe original
- Capsicumfits about as well
- Spinachfits about as well
- Shallotfits less well
Fit is the average pairing score against butter, egg, pepper, lemon. Candidates are from the same food group and used in at least 100 recipes.
“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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