Why it works: Vinegar and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and 14,067 recipes mention both. Both carry isobutyraldehyde, which smells malty, green. The science ↓
The Dewey Cook Book
Ingredients
Directions
Prepare
Mix the dry ingredients together.
Stir in the egg.
Very slowly stir in the vinegar.
Add the milk just before cooking.
Cook and finish
Cook in a double boiler until the consistency of thick cream.
Strain if necessary.
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 aroma chemistry they share, and how many recipes mention both.
-
Vinegar + mustardtop 7% of all pairsAroma overlapmoderateMentioned together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + vinegartop 15% of all pairsAroma overlapmoderateMentioned together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Milk + eggtop 18% of all pairsAroma overlapmoderateMentioned together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Milk + sugartop 18% of all pairsAroma overlaplowMentioned together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Sugar + mustardtop 19% of all pairsAroma overlapmoderateMentioned together8,424 recipes
Shared aroma: guaiacol (smoky, sweet).
Milk and sugar share little aroma chemistry, yet 77,875 recipes mention both: they likely 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 set during cooking and add richness.
- Milk
- Forms the base of the dressing and adds richness and body.
- Vinegar
- Adds acidity that gives the dressing its sharp, tangy flavor.
- Oil
- Adds fat that gives the dressing a smooth, rich mouthfeel.
- Sugar
- Balances the acidity of the vinegar with sweetness.
The step that matters
Cook in a double boiler until the consistency of thick cream.. Egg proteins set gently as they heat. Too much heat or a direct flame can scramble the eggs and curdle the dressing, so gentle, indirect heat is needed to reach a smooth, thick texture.
Flavor stand-ins for the mustard
How well each one fits the dish's main ingredients (milk, sugar, egg, vinegar):
- Capsicumbetter flavor fit
- Mustardthe original
- Cucumberabout as good a flavor fit
- Sweet potatoabout as good a flavor fit
Fit is the average pairing score against milk, sugar, egg, vinegar. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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