Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Mackerel Balls
Ingredients
Directions
Prepare the fish
Soak the mackerel overnight, then pour boiling water over it in the morning.
Carefully remove the bones from the fish.
Shape and fry
Mix the fish with the cold mashed potatoes, beaten eggs, and pepper.
Shape the mixture into balls the size of an egg.
Heat the butter in a chafing dish, then add the balls and fry until brown.
Turn the balls to brown the other side.
Serve
Serve hot, garnished with parsley.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Salt mackerel
- Provides the main fish flavour and the body of the balls.
- Cold mashed potatoes
- Adds bulk and moisture, helping the mixture hold its shape.
- Beaten eggs
- Bind the mixture together so the balls hold their shape when fried.
- Butter
- Fat for frying that promotes browning on the outside of the balls.
The step that matters
Carefully remove the bones from the fish. Small bones left in the fish can end up in the mixed balls and be eaten. Checking the fish after soaking and boiling water helps the flesh flake cleanly and keeps the texture even.
Swap the potato
How well each one fits the dish's main ingredients (egg, pepper, butter, parsley):
- Shallotfits about as well
- Chivefits about as well
- Carrotfits about as well
- Potatothe original
Fit is the average pairing score against egg, pepper, butter, parsley. 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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