Why it works: Ketchup and sauce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,099 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Skate, Stewed
Ingredients
Directions
Prepare the fish
Skin and cut the skate into neat pieces.
Fry the pieces in hot fat until nicely browned.
Drain the fried pieces and set aside.
Make the gravy
In a saucepan, combine the head, skin, trimmings, water, onion, pepper, and salt. Simmer gently until the gravy is strong.
Strain the gravy back into the saucepan.
Thicken the gravy with brown thickening.
Finish and serve
Add chives or onion, parsley, chili vinegar, mushroom ketchup, and Harvey's sauce. Boil the sauce until thick enough to coat the spoon.
Heat the fish in the sauce. Serve.
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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Ketchup + saucetop 1% of all pairsSmell alikestrongCooked together1,099 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Chive + parsleytop 3% of all pairsSmell alikestrongCooked together2,150 recipes
Shared aroma: coumarin (sweet, hay).
-
Onion + chivetop 3% of all pairsSmell alikestrongCooked together1,907 recipes
Shared aroma: decanal (soap, orange peel).
-
Chive + mushroomtop 9% of all pairsSmell alikemoderateCooked together553 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Skate
- Forms the main body of the dish, cooking into tender flakes in the sauce.
- Brown thickening
- Thickens the gravy so it clings to the fish and coats the spoon.
- Onion
- Adds savoury sweetness and aroma to the gravy as it simmers.
- Mushroom ketchup
- Adds concentrated savoury depth to the sauce.
- Chili vinegar
- Adds sharpness that brightens the rich gravy.
The step that matters
Boil the sauce until thick enough to coat the spoon. Reducing the gravy concentrates flavour and lets the thickener set properly. Under-reduced sauce stays thin and runs off the fish, while over-boiling can make it gluey or too salty.
Swap the onion
How well each one fits the dish's main ingredients (pepper, chive, parsley, vinegar, mushroom, ketchup, sauce):
- Shallotfits better
- Capsicumfits better
- Horseradishfits better
- Onionthe original
Fit is the average pairing score against pepper, chive, parsley, vinegar, mushroom, ketchup, sauce. 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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