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 base
Take one even teaspoonful of mixed mustard, one teaspoonful of salt, and a pinch of cayenne.
Add the yolk of one egg. Stir together.
Emulsify the oil
Add very gradually a teaspoonful of best olive oil, stirring steadily one way.
Continue adding oil until a thick paste forms, a smooth yellow ball.
If the egg breaks and the mixture becomes thin after adding oil, add another yolk to restore it.
Finish and thin
When ready, thin with vinegar or lemon juice and add a little sweet cream to reach a very thick cream consistency.
Alternately add oil, vinegar, and lemon juice.
Nutrition, whole recipe (rough)
What these numbers assume: 6 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Egg | 1 large egg (50g) | 78 |
| Lemon | juice of 1 lemon (48ml) | 12 |
| Cayenne | 1 tsp (1.8g) | 6 |
| Mustard | 1 tsp (5g) yellow | 3 |
| Vinegar | 1 tbsp (15ml) distilled | 3 |
| Salt | 1 tsp (6g) | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
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. See the original page.
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).
-
Tea + lemontop 8% of all pairsSmell alikemoderateCooked together610 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Mustard + lemontop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Mustard + teatop 17% of all pairsSmell alikemoderateCooked together67 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Egg and lemon barely smell alike, yet cooks put them together in 44,316 recipes: they work on texture and structure more than aroma.
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 into the mixture, holding it together as a thick sauce.
- Olive oil (in the method)
- Forms the bulk of the sauce, providing richness and a thick, smooth body.
- Mixed mustard
- Helps stabilise the emulsion and adds sharpness to the sauce.
- Vinegar
- Thins the sauce and adds acidity that brightens its flavour.
- Lemon juice
- Thins the sauce and adds acidity that brightens its flavour.
The step that matters
Adding the oil gradually while stirring steadily in one direction. Oil must be dispersed into tiny droplets around the egg yolk's emulsifier. Adding it too fast or stirring unevenly lets the droplets merge, so the egg breaks and the mixture thins instead of thickening.
Swap the mustard
How well each one fits the dish's main ingredients (tea, egg, vinegar, lemon):
- Cucumberfits about as well
- Capsicumfits about as well
- Asparagusfits about as well
- Mustardthe original
Fit is the average pairing score against tea, egg, vinegar, lemon. 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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