Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
A Very Fine Fish Sauce
Ingredients
Directions
In a tin saucepan, combine the port wine, mountain wine, walnut ketchup, anchovies with their liquor, walnut pickle, rind and juice of 1 large lemon, shallots, Cayenne pepper, horseradish, mace, and mustard.
Boil gently until the rawness is gone.
Pour into small bottles, cork tightly, and seal the tops.
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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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Walnut + horseradishtop 8% of all pairsSmell alikestrongCooked together259 recipes
Shared aroma: coumarin (sweet, hay).
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Lemon + horseradishtop 9% of all pairsSmell alikestrongCooked together1,155 recipes
Shared aroma: coumarin (sweet, hay).
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Walnut + lemontop 10% of all pairsSmell alikestrongCooked together2,149 recipes
Shared aroma: 2-nonenal (fatty, green).
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Ketchup + horseradishtop 10% of all pairsSmell alikemoderateCooked together223 recipes
Shared aroma: ethanol (alcoholic, ethereal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Anchovies
- Provide a salty, savoury backbone and deep umami flavour to the sauce.
- Walnut ketchup
- Adds concentrated savoury, tangy depth that builds the sauce's character.
- Port wine
- Contributes sweetness and body as the main liquid base of the sauce.
- Horseradish
- Adds sharp pungency that mellows during cooking and gives the sauce its bite.
- Lemon
- Adds acidity that brightens the sauce and balances its richness.
The step that matters
Boil gently until the rawness is gone. Boiling too hard can drive off aroma and over-concentrate the sauce, while stopping early leaves raw, sharp alcohol and vegetable notes. Gentle heat lets flavours meld and mellow evenly.
Swap the mace
How well each one fits the dish's main ingredients (port wine, wine, walnut, ketchup, lemon, pepper, horseradish):
- Tarragonfits better
- Thymefits better
- Parsleyfits better
- Macethe original
Fit is the average pairing score against port wine, wine, walnut, ketchup, lemon, pepper, horseradish. 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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