Why it works: Pepper and lemon 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 Make a Strong Fish Gravy
Ingredients
Directions
Prepare the fish
Skin the fish, scale the fish, gut the fish, and wash the fish.
Cut the fish into small pieces.
Make the gravy
Place the fish in a saucepan and cover the saucepan with water.
Add the toasted bread, mace, whole pepper, sweet herbs, and lemon peel.
Boil until rich and flavorful.
Make the roux and finish
Melt the butter in a separate saucepan.
Add a little flour to the melted butter and stir until brown.
Strain the fish gravy into the butter mixture.
Boil for a few minutes.
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 + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Fish + breadtop 10% of all pairsSmell alikemoderateCooked together1,668 recipes
Shared aroma: 2-undecenal (sweet).
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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Eels or fish
- Provide the main body and flavor of the gravy.
- Toasted bread
- Thickens the liquid slightly and adds body to the gravy.
- Butter
- Adds richness and fat, and forms the base for browning the flour.
- Flour
- Thickens the butter and, once browned, adds a nutty color and flavor.
The step that matters
Stir the flour until brown. Flour cooked in melted butter must be stirred constantly so it browns evenly without scorching. Scorched flour turns bitter and dark, and it thickens the gravy poorly.
Swap the mace
How well each one fits the dish's main ingredients (fish, bread, pepper, lemon, butter, flour):
- Parsleyfits better
- Marjoramfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against fish, bread, pepper, lemon, butter, flour. 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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