Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Mayonnaise Dressing
Ingredients
Directions
Make the emulsion
Mix the mustard, salt, paprika, and egg yolks together well.
Add the olive oil drop by drop until it begins to thicken.
Finish and serve
Once thick, alternate adding lemon juice and vinegar with the remaining oil until fully combined.
Just before serving, fold in the whipped cream.
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 + 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).
-
Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Olive + vinegartop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Mustard + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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, so the dressing thickens and holds together.
- Olive oil
- Forms the fat phase that gives the dressing its rich body and smooth texture.
- Mustard
- Acts as a second emulsifier that helps keep the oil suspended and the sauce stable.
- Lemon juice
- Adds acidity that brightens flavor and balances the richness of the oil.
- Whipped cream
- Adds air and lightness, softening the texture of the finished dressing.
The step that matters
Adding the oil drop by drop at the start. Oil added too fast before the yolks have formed an emulsion can break the mixture, leaving it greasy and separated. Slow addition lets the lecithin in the yolks coat the oil droplets, so the sauce thickens into a stable emulsion.
Swap the lemon
How well each one fits the dish's main ingredients (mustard, egg, olive, vinegar, cream):
- Avocadofits better
- Cherryfits about as well
- Lemonthe original
- Coconutfits about as well
Fit is the average pairing score against mustard, egg, olive, vinegar, cream. 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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