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 Sauce
Ingredients
Directions
Make the mayonnaise
In a two-quart bowl, combine the mustard, salt, and vinegar.
Beat in the egg yolk.
Gradually add the olive oil while beating briskly.
Continue beating until the mixture becomes a thick batter.
Finish and store
Adjust flavor with additional vinegar or lemon juice as desired.
Store covered in a cool place for up to weeks.
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 + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + olivetop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Vinegar + olivetop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Mustard + eggtop 28% of all pairsSmell alikemoderateCooked together9,210 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
Egg + olivetop 31% of all pairsSmell alikemoderateCooked together15,340 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolk
- Its lecithin emulsifies the oil and vinegar, holding the sauce together as a thick, stable mixture.
- Olive oil
- Forms the fat phase of the emulsion, giving mayonnaise its rich body and smooth texture.
- Vinegar
- Adds acidity that sharpens flavor and helps keep the emulsion stable.
- Ground mustard
- Its natural emulsifiers help stabilize the emulsion and add a sharp, savory note.
The step that matters
Gradually add the olive oil while beating briskly. Oil must be dispersed into tiny droplets in the egg yolk. Adding it too fast overwhelms the yolk's emulsifiers, so the mixture fails to thicken and separates.
Swap the mustard
How well each one fits the dish's main ingredients (vinegar, egg, olive):
- Cucumberfits better
- Capsicumfits better
- Mustardthe original
- Tomatofits about as well
Fit is the average pairing score against vinegar, egg, olive. 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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