Why it works: Pepper and mustard are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 15,430 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Liver Terrapin
Ingredients
Directions
Prepare the liver
Parboil the liver and reserve the cooking liquid for gravy.
Cut the liver into small pieces and return it to the saucepan with the reserved liquid.
Make the gravy
Season with coarse sea salt, black pepper, and butter.
Mix the dry mustard with the browned flour and add to the saucepan.
Add sherry wine to taste.
Finish and serve
Boil the eggs hard, chop finely, and add just before serving.
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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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 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).
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Butter + winetop 13% of all pairsSmell alikemoderateCooked together8,645 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
-
Butter + sherrytop 14% of all pairsSmell alikemoderateCooked together3,505 recipes
Shared aroma: ethyl octanoate (fruity, wine).
Butter and flour 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
- Liver
- Forms the main body of the dish, giving it its substance and savory, meaty flavor.
- Browned flour
- Thickens the cooking liquid into a gravy as its starch swells when heated.
- Butter
- Adds richness and a smooth mouthfeel to the gravy.
- Hard-boiled eggs
- Add texture and a mild, creamy contrast to the rich liver.
- Dry mustard
- Adds a sharp, pungent bite that cuts through the richness of the liver.
The step that matters
Add the browned flour with the mustard. Flour added directly to hot liquid can clump; stirring the flour and mustard smoothly into the liquid helps it disperse evenly so the gravy thickens without lumps.
Swap the mustard
How well each one fits the dish's main ingredients (liver, pepper, butter, flour, egg, sherry, wine):
- Shallotfits better
- Capsicumfits better
- Chivefits better
- Mustardthe original
Fit is the average pairing score against liver, pepper, butter, flour, egg, sherry, wine. 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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