Why it works: Mustard and lettuce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Chicken Salad
Ingredients
Directions
Prepare the chicken and celery
Remove the meat from the bones of the fowl, cutting it into pieces no larger than 1 inch.
Chop the white part of the celery into 1‑inch pieces and mix with the chicken.
Make the dressing
Mash the yolks of the hard‑boiled eggs and mix with the dry mustard and enough water to form a smooth paste.
Place the egg mixture in a shallow dish, add cayenne pepper and salt.
Slowly pour in the sweet oil while mixing thoroughly with a wooden fork.
Once smooth, add the vinegar in the same manner, stirring until well combined.
Cover the dressing and refrigerate until ready to use.
Assemble and serve
Before serving, break the lettuce leaves from the stalk and add to the chicken and celery mixture.
Ensure the dressing is well mixed, then pour it over the salad and combine gently.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Mustard + lettucetop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Celery + mustardtop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Celery + lettucetop 4% of all pairsSmell alikestrongCooked together2,033 recipes
Shared aroma: nonanal (fat, citrus).
-
Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Sweet oil
- Forms the rich base of the dressing, carrying flavour and giving it a smooth, creamy body.
- Hard boiled egg yolks
- Emulsify with the oil and mustard to thicken the dressing and give it a smooth texture.
- Vinegar
- Adds acidity that brightens the dressing and balances the richness of the oil.
- Dry mustard
- Adds sharp flavour and helps stabilise the emulsion of the dressing.
- Celery
- Adds crisp texture and a fresh, slightly savoury crunch to the salad.
The step that matters
Adding the oil slowly while mixing. Pouring the oil gradually into the mashed yolks and mustard lets the fat disperse into tiny droplets, forming a stable, smooth emulsion. Adding it too fast can cause the dressing to separate and turn oily.
Swap the celery
How well each one fits the dish's main ingredients (egg, mustard, pepper, vinegar, lettuce):
- Tarragonfits better
- Capersfits better
- Dillfits better
- Celerythe original
Fit is the average pairing score against egg, mustard, pepper, vinegar, lettuce. 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.
More chicken salad recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Salad Dressing491 recipes
Tomato Salad179 recipes
Cold Slaw160 recipes
Boiled Salad Dressing67 recipes