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 ↓
Potato Cakes
Ingredients
Directions
Prepare the mixture
Grate the potatoes in a colander to allow water to drip off.
Grate the onion and add the chopped parsley.
Mix in the eggs and salt thoroughly.
Add the flour and mix well.
Fry
Fry in hot lard, using about 1 large spoonful of the mixture for each cake.
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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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + flourtop 15% of all pairsSmell alikemoderateCooked together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Provide the starchy bulk that gives the cakes their body when fried.
- Eggs
- Bind the grated ingredients together so the cakes hold their shape.
- Flour
- Absorbs excess moisture and helps the mixture hold together while frying.
- Onion
- Adds savoury flavour to the cakes.
The step that matters
Draining the grated potatoes. Grated potatoes release a lot of water. If it is not drained off, the mixture stays wet and loose, so the cakes spread, steam instead of crisping, and hold together poorly in the hot lard.
Swap the onion
How well each one fits the dish's main ingredients (potato, parsley, egg, flour):
- Chivefits better
- Shallotfits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against potato, parsley, egg, flour. 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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