Why it works: Onion and potato are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Fish-cake
Ingredients
Directions
Prepare
Boil the fish pieces and remove the bones.
Add coarse sea salt, powdered pepper, minced onions, boiled potatoes (mashed), and eggs.
Mix to form a thick paste.
Shape and fry
Spread the mixture on a flat surface to a uniform thickness of ½ inch.
Cut into small squares and fry in ghee until golden brown.
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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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Fish + potatotop 15% of all pairsSmell alikemoderateCooked together134 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Fish + gheetop 18% of all pairsSmell alikelowCooked together83 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Pieces of fish
- Provides the main body and flavour of the cake.
- Boiled potatoes
- Adds softness and moisture, helping the mixture hold together.
- Eggs
- Bind the mixture so it holds its shape when cut and fried.
- Ghee
- Fat for frying that browns the outside and adds richness.
The step that matters
Spreading to an even thickness. A uniform layer of ½ inch lets the cakes cook through at the same rate, so the centre is heated while the outside turns golden without burning.
Swap the onion
How well each one fits the dish's main ingredients (fish, pepper, potato, egg, ghee):
- Capsicumfits better
- Spinachfits about as well
- Tomatofits about as well
- Onionthe original
Fit is the average pairing score against fish, pepper, potato, egg, ghee. 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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