Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Salt Mackerel Stewed with Cream
Ingredients
Directions
Prepare the fish
Soak the mackerel in warm water overnight.
Cook the mackerel in a shallow pan with enough water to cover it for 15 minutes, then drain it.
Make the gravy
Cover the mackerel with milk or cream.
Mix flour with a little butter until smooth.
Add the mixture to the pan to thicken the gravy.
Add pepper to the gravy.
Serve
Place the mackerel on a platter.
Pour the gravy 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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Fish + milktop 13% of all pairsSmell alikemoderateCooked together1,432 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Mackerel
- Forms the body of the dish, its flesh flaking into the stew.
- Milk or cream
- Adds richness and a smooth, creamy body to the gravy.
- Flour
- Thickens the gravy as its starch swells in the hot liquid.
- Butter
- Adds richness and, mixed with the flour, helps it blend smoothly.
The step that matters
Mixing flour with butter until smooth. Flour added directly to hot liquid clumps, because the outer layer of each granule hydrates first and traps dry flour inside. Blending it into butter first coats the granules so they disperse evenly and thicken the gravy without lumps.
“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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