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 ↓
Salad Dressing Without Eggs
Ingredients
Directions
Make the base
In a saucepan, mix the flour, butter, salt, sugar, and mustard together.
Add the cream and place the saucepan over medium heat.
Stir constantly until the mixture thickens.
Finish
Remove from heat and stir in the vinegar.
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).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + mustardtop 13% of all pairsSmell alikemoderateCooked together5,066 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- Flour
- Its starch swells in the hot cream and thickens the dressing.
- Butter
- Adds fat for richness and a smooth, rounded mouthfeel.
- Cream
- Provides the liquid base and body, thickening as it heats.
- Vinegar
- Adds sharp acidity that balances the richness of the cream and butter.
- Sugar
- Adds mild sweetness that softens the sharpness of the vinegar.
The step that matters
Stir constantly until the mixture thickens. Flour starch needs even heat and movement to swell evenly in the cream. If the mixture sits still, it can scorch on the bottom of the pan or form lumps that stay in the dressing.
Swap the mustard
How well each one fits the dish's main ingredients (flour, butter, sugar, cream, vinegar):
- Mustardthe original
- Shallotfits about as well
- Arrowrootfits about as well
- Leekfits about as well
Fit is the average pairing score against flour, butter, sugar, cream, 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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