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
Prepare
Chill the bowl, spoon, oil, and eggs thoroughly.
Separate the eggs.
Make the mayonnaise
Mix the sifted dry ingredients with the yolks.
Add the oil slowly, a few drops at a time.
When the mixture thickens, alternate adding oil, vinegar, and lemon juice.
Ensure the mixture is thick enough to hold its shape.
Beat the egg whites until stiff and fold them into the mixture.
Optionally use thick cream instead of egg whites.
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).
-
Lemon + olivetop 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).
-
Vinegar + olivetop 10% of all pairsSmell alikemoderateCooked together12,297 recipes
Shared aroma: isoamyl acetate (banana, fruity).
-
Lemon + mustardtop 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
- Olive oil
- Forms the emulsion with the yolks, giving the dressing its body and richness.
- Eggs
- Yolks emulsify the oil into the dressing; whites are folded in for lightness.
- Lemon juice
- Adds acidity that brightens flavour and helps stabilise the emulsion.
- Vinegar
- Adds sharp acidity that balances the richness of the oil.
The step that matters
Adding the oil slowly. Oil must be added a few drops at a time at first so the yolk can emulsify it. Adding it too fast breaks the emulsion, and the mixture separates and fails to thicken.
Swap the lemon
How well each one fits the dish's main ingredients (mustard, vinegar, sugar, egg, olive):
- Lemonthe original
- Avocadofits about as well
- Cherryfits about as well
- Figfits less well
Fit is the average pairing score against mustard, vinegar, sugar, 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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