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 ↓
Salad Dressing
Ingredients
Directions
Make the dressing
Cream the softened butter until light and fluffy.
Stir in the egg yolks until smooth.
Mix in the mustard and salt, then add cayenne or white pepper if desired.
Slowly drizzle in the olive oil while stirring continuously.
Combine the lemon juice and vinegar to make ½ cup, then add slowly to the mixture while stirring.
Adjust the consistency by adding more vinegar if needed, tasting as you go.
Serve
If using lettuce, add celery salt to the seasoning at the beginning.
Do not pour the dressing over the salad until just before serving.
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.
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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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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Olive + lemontop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 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
- Butter
- Adds richness and a smooth, creamy body to the dressing.
- Egg yolks
- Emulsifiers that bind the oil and vinegar into a stable, thick dressing.
- Olive oil
- Forms the bulk of the emulsion, giving the dressing its body and mouthfeel.
- Prepared mustard
- Acts as a further emulsifier and adds sharp, tangy flavour.
- Vinegar
- Adds acidity that brightens the flavour and balances the richness of the oil.
- Lemon juice
- Contributes acidity and fresh citrus aroma to the dressing.
The step that matters
Drizzling in the olive oil. Adding the oil slowly while stirring lets the egg yolks and mustard disperse it into tiny droplets. Adding it too fast can break the emulsion, leaving the dressing oily and separated.
Swap the white pepper
How well each one fits the dish's main ingredients (butter, egg, mustard, pepper, olive, lemon, vinegar):
- Tarragonfits better
- Parsleyfits better
- Capersfits better
- White pepperthe original
Fit is the average pairing score against butter, egg, mustard, pepper, olive, lemon, vinegar. 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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