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 ↓
Boiled Salad Dressing
Ingredients
Directions
Make the dressing
Combine oil, coarse sea salt, mustard, and sugar in a bowl and stir until smooth.
Add the eggs and beat well.
Mix in the vinegar and then the milk.
Place the bowl in a basin of boiling water and stir until it thickens like soft custard.
Cook for 8–10 minutes in a common white bowl or 12–15 minutes in a thick bowl.
Store
Store in a tightly sealed bottle in a cool place for up to two 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.
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Sugar + mustardtop 19% of all pairsSmell alikemoderateCooked together8,424 recipes
Shared aroma: guaiacol (smoky, sweet).
Sugar and milk barely smell alike, yet cooks put them together in 77,875 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
- Eggs
- Thicken the dressing as they cook gently into a custard-like texture.
- Vinegar
- Adds acidity that gives the dressing its sharp, tangy flavour.
- Milk
- Dilutes the dressing and softens its texture for a creamier mouthfeel.
- Sugar
- Balances the sharpness of the vinegar and mustard with sweetness.
- Mustard
- Adds sharp, pungent flavour and helps emulsify the oil into the mixture.
The step that matters
Stirring over the boiling water. Egg proteins set gradually when heated. If the heat is too high or stirring stops, the eggs can curdle or scramble. Constant gentle stirring keeps the mixture smooth as it thickens.
Swap the mustard
How well each one fits the dish's main ingredients (egg, sugar, milk, vinegar):
- Capsicumfits better
- Mustardthe original
- Cucumberfits about as well
- Sweet potatofits about as well
Fit is the average pairing score against egg, sugar, milk, 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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