Why it works: Lemon and pepper 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 with Dutch Sauce
Ingredients
Directions
Prepare the asparagus
Pick and scrape the asparagus, cut it into equal lengths, and tie it in small bundles.
Soak the bundles in salt water for 2 hours.
Boil plenty of salted water, add the bundles, and cook gently for 15-20 minutes.
Remove the asparagus from the water.
Make the sauce
In a saucepan, mix butter and flour.
Add milk and stock.
Stir until it boils.
Add lemon juice, salt, and pepper to taste.
Remove from heat and stir in egg yolks until smooth.
Serve
Dip the toast in the boiling water.
Serve the asparagus on the toast after removing the strings.
Serve the sauce hot alongside the asparagus.
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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Lemon + peppertop 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).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Asparagus
- Forms the main vegetable, cooked gently until tender for serving on toast.
- Butter
- Enriches the sauce with fat, giving it a smooth, rich mouthfeel.
- Flour
- Thickens the butter and milk mixture into a smooth, pourable sauce.
- Egg yolks
- Stirred in off the heat to thicken and enrich the sauce without curdling.
- Milk
- Forms the liquid base of the sauce, adding softness and body.
- Lemon juice
- Adds acidity that brightens the rich, buttery sauce.
The step that matters
Stir in the egg yolks off the heat. Egg yolks thicken through gentle heat; if added to a boiling sauce they can scramble and turn grainy. Removing the pan from the heat first lets them thicken smoothly.
Swap the asparagus
How well each one fits the dish's main ingredients (butter, milk, flour, egg, lemon, pepper):
- Asparagusthe original
- Shallotfits about as well
- Capsicumfits about as well
- Spinachfits about as well
Fit is the average pairing score against butter, milk, flour, egg, lemon, pepper. 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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