Why it works: Mustard and celery are a kitchen classic. They rank in the top 2% of all ingredient pairs, and cooks put them together in 4,169 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓
Mayonnaise Dressing
Ingredients
Directions
Make the dressing
Place the egg yolks in a bowl.
Add the olive oil 1 teaspoon at a time, beating vigorously with an egg beater until very thick.
Stir in the lemon juice.
Add the pepper juice, salt, mustard, celery seed, and onion if desired.
Chill
Chill the eggs and oil in the refrigerator for about 1 hour before using.
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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Mustard + celerytop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
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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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Lemon + celerytop 3% of all pairsSmell alikestrongCooked together3,467 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Pepper + celerytop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolks
- Lecithin in the yolks emulsifies the oil and water, letting the dressing thicken into a stable sauce.
- Olive oil
- Forms the droplets that give the dressing its thick body and rich, fatty mouthfeel.
- Lemon juice
- Adds acidity that brightens the flavor and balances the richness of the oil.
- Mustard
- Its compounds help stabilize the emulsion and add a sharp, savory note.
The step that matters
Adding the olive oil. Oil must be added very slowly while beating, so the egg yolk can surround each small droplet. Adding it too fast overwhelms the yolk, and the emulsion breaks into a thin, greasy liquid.
Swap the mustard
The recipe marks mustard as optional. How well each one fits the dish's main ingredients (egg, olive, lemon, pepper, celery, onion):
- Spinachfits better
- Capsicumfits better
- Carrotfits about as well
- Mustardthe original
Fit is the average pairing score against egg, olive, lemon, pepper, celery, onion. 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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