Why it works: Shallot and horseradish match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 376 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
A Very Fine Fish Sauce
Ingredients
Directions
Make the sauce
Combine the port wine, mountain wine, walnut ketchup, anchovies with their liquor, walnut pickle, lemon rind and juice, shallots, cayenne pepper, horseradish, mace, and mustard in a tin saucepan.
Boil gently until the rawness is gone.
Bottle
Pour the sauce into small bottles, cork them 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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Shallot + horseradishtop 1% of all pairsSmell alikestrongCooked together376 recipes
Shared aroma: coumarin (sweet, hay).
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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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Lemon + shallottop 6% of all pairsSmell alikestrongCooked together2,523 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Walnut + shallottop 6% of all pairsSmell alikestrongCooked together440 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Walnut + horseradishtop 8% of all pairsSmell alikestrongCooked together259 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Anchovies
- Add salty, savoury depth that gives the sauce its umami character.
- Walnut ketchup
- Contributes concentrated savoury, slightly sweet flavour as the main seasoning base.
- Port wine
- Provides the liquid base and a sweet, rich wine flavour.
- Horseradish
- Adds sharp, pungent heat that mellows during gentle cooking.
- Lemon
- Adds acidity that brightens the sauce and balances the richer ingredients.
The step that matters
Boil gently until the rawness is gone. Gentle boiling drives off raw alcohol and sharp volatile compounds from the wine and horseradish, mellowing the flavour. Boiling too hard can evaporate too much liquid and concentrate the sauce unevenly.
Swap the walnut
How well each one fits the dish's main ingredients (port wine, wine, ketchup, lemon, shallot, pepper, horseradish):
- Chestnutfits about as well
- Walnutthe original
- Beansfits about as well
- Peasfits less well
Fit is the average pairing score against port wine, wine, ketchup, lemon, shallot, 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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