Why it works: Mustard and cucumber match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 2,281 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Ham Sandwiches
Ingredients
Directions
Make the filling
In a bowl, combine minced ham, mustard, eggs, flour, butter, and chopped cucumber pickles.
Beat the mixture thoroughly.
Pour the mixture into 1 pint of boiling vinegar, but do not let it boil.
Assemble
Once cooled, spread the mixture between slices of bread to make sandwiches.
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 + cucumbertop 3% of all pairsSmell alikestrongCooked together2,281 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Cucumber + vinegartop 8% of all pairsSmell alikemoderateCooked together4,734 recipes
Shared aroma: 2-methylbutyl acetate (fruit).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + flourtop 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
- Eggs
- Bind the filling and help it thicken as it cooks gently in the vinegar.
- Flour
- Thickens the mixture so it spreads rather than running loose.
- Butter
- Adds richness and a softer, smoother texture to the filling.
- Mustard
- Adds sharp, pungent flavor that balances the richness of the ham and eggs.
- Chopped cucumber pickles
- Adds acidity and crunch to the filling.
The step that matters
Pour into the vinegar without letting it boil. Boiling can curdle the egg and cause the mixture to turn grainy or separate. Keeping the liquid just below a boil lets the eggs and flour thicken it gently and evenly.
Swap the cucumber
How well each one fits the dish's main ingredients (ham, mustard, egg, flour, butter, vinegar):
- Shallotfits better
- Horseradishfits better
- Chivefits about as well
- Cucumberthe original
Fit is the average pairing score against ham, mustard, egg, flour, butter, 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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