Why it works: Potato and onion 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 Cakes
Ingredients
Directions
Prepare the mixture
In a bowl, mix together the mashed potatoes and cold boiled fish.
Add milk, butter, and egg if using; mix well.
Stir in pepper, chopped onion, thyme, and salt if needed.
Form and fry
Sprinkle flour on the mixture and form into small, thick cakes.
Fry the cakes in a skillet until they are light brown on both sides.
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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + thymetop 4% of all pairsSmell alikemoderateCooked together11,585 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Potato + thymetop 5% of all pairsSmell alikemoderateCooked together1,586 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Onion + thymetop 7% of all pairsSmell alikemoderateCooked together11,171 recipes
Shared aroma: coumarin (sweet, hay).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mashed potatoes
- Provides the bulk and soft body that holds the cakes together.
- Cold boiled fish
- Supplies the main flavour and flakes that give the cakes their texture.
- Butter
- Adds richness and fat, contributing to flavour and a tender interior.
- Egg
- Binds the mixture so the cakes hold their shape while frying.
- Flour
- Dusting helps the outside of the cakes brown and form a light crust.
The step that matters
Fry the cakes until light brown on both sides. Frying over steady heat browns the surface through the Maillard reaction, giving flavour and a crisp crust. Cooking too hot can scorch the outside before the centre heats through.
Swap the onion
How well each one fits the dish's main ingredients (potato, fish, milk, butter, egg, pepper, thyme):
- Capsicumfits better
- Asparagusfits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against potato, fish, milk, butter, egg, pepper, thyme. 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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