Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Fried Perch
Ingredients
Directions
Prepare
Lay the cleaned and dried perch side by side on a board or large dish.
Sprinkle with coarse sea salt and dredge with flour on both sides.
Fry
Heat lard or beef dripping in a frying pan over the fire until boiling.
Test the heat by dipping the tail of a fish; if it crisps immediately, it's ready.
Fry the fish for 5 minutes on one side, then turn and fry for another 5 minutes.
Serve
Serve with melted butter flavored with soy sauce or ketchup.
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.
Photo for illustrative purposes only · Contact us to use it
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + saucetop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Beef + buttertop 16% of all pairsSmell alikemoderateCooked together10,847 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
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Flour + saucetop 18% of all pairsSmell alikemoderateCooked together8,078 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Beef + saucetop 24% of all pairsSmell alikelowCooked together3,650 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Perch
- The main protein, which cooks through in the hot fat while the outside crisps.
- Flour
- Forms a dry coating that browns and crisps when it meets the hot fat.
- Lard or beef dripping
- Hot frying fat that conducts heat quickly and crisps the flour coating.
- Melted butter
- Adds richness and fat to the finished fish as a serving sauce.
The step that matters
Testing the fat temperature. If the fat is not hot enough, the flour coating absorbs fat and turns greasy instead of crisping. A dipped fish tail that crisps immediately shows the fat is ready, so the fish seals quickly.
“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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