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 into equal lengths, and tie into small bundles.
Soak the bundles in salt water for 2 hours.
Cook and serve the asparagus
Boil salted water, add the bundles, and cook gently for 15‑20 minutes.
Remove the asparagus and dip the toast in the boiling water.
Serve the asparagus on the toast after removing the strings.
Make the Dutch sauce
In a saucepan, mix butter and flour, then 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 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).
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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 body of the dish, carrying the flavour and texture.
- Butter
- Adds richness and fat, and with flour forms the base of the sauce.
- Flour
- Thickens the butter and milk mixture into a smooth, pourable sauce.
- Egg yolks
- Enrich and thicken the sauce, giving it a smooth, creamy texture when stirred in off heat.
- Milk
- Adds liquid and creaminess to the sauce, mellowing its flavour.
- Lemon juice
- Adds acidity that brightens the rich butter and egg sauce.
The step that matters
Stir the egg yolks in off the heat. Egg yolks thicken at around 160°F and can scramble if the sauce is too hot. Removing the pan from heat before adding them lets them thicken gently into a smooth sauce.
Swap the asparagus
How well each one fits the dish's main ingredients (butter, flour, lemon, milk, egg, pepper):
- Asparagusthe original
- Shallotfits about as well
- Capsicumfits about as well
- Spinachfits about as well
Fit is the average pairing score against butter, flour, lemon, milk, egg, 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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