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 ↓
To Stew Carp or Tench
Ingredients
Directions
Dredge the cleaned fish with flour and fry until light brown.
Place the fish in a stewpan with red wine, water, lemon pickle, walnut ketchup, mushroom powder, and cayenne pepper.
Add the onion and horseradish, cover the pan, and stew gently until the gravy reduces to just cover the fish.
Remove the fish, strain the gravy, thicken it, and pour it over the fish.
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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Red wine + mushroomtop 9% of all pairsSmell alikemoderateCooked together720 recipes
Shared aroma: 2-methoxy-4-methylphenol (smoky, clove).
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Mushroom + oniontop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Lemon + walnuttop 10% of all pairsSmell alikestrongCooked together2,149 recipes
Shared aroma: 2-nonenal (fatty, green).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Carp or tench
- Firm white fish that forms the body of the stew and holds its shape during gentle stewing.
- Red wine
- Adds acidity and depth of flavour to the gravy as it reduces.
- Flour
- Light coating that browns during frying and helps the fish keep its surface intact.
- Lemon pickle
- Contributes sourness and savoury tang to the gravy.
- Walnut ketchup
- Adds dark, savoury richness and umami to the gravy.
- Onion
- Releases sweetness and aroma into the gravy during slow stewing.
The step that matters
Stewing until the gravy reduces to just cover the fish. Stewing gently concentrates the liquid's flavour, but if the gravy reduces too far the fish can dry out and stick. Stopping at the right level keeps the fish moist and the sauce well flavoured.
Swap the onion
How well each one fits the dish's main ingredients (flour, red wine, lemon, walnut, ketchup, mushroom, pepper):
- Shallotfits better
- Capsicumfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against flour, red wine, lemon, walnut, ketchup, mushroom, pepper. 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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