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 Pan Cakes, No. 1
Ingredients
Directions
Prepare
Peel, wash, and grate the raw Irish potatoes.
In a bowl, mix the grated potatoes with salt, eggs, and chopped onion.
Fry
Heat equal parts of nut oil (or vegetable oil) and butter in a frying pan.
Spoon the mixture into the hot pan to form small, round, thin cakes.
Fry until golden 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.
-
Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 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).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Potato + eggtop 29% of all pairsSmell alikemoderateCooked together4,978 recipes
Shared aroma: (e)-2-octenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Raw irish potatoes
- Provide the starch and bulk that form the body of the pancakes.
- Eggs
- Bind the grated potato together and help the cakes hold their shape.
- Onion
- Adds aroma and savory flavor to the potato mixture.
- Butter
- Adds richness and helps the cakes brown in the pan.
The step that matters
Spoon the mixture into the hot pan. Grated potato starts to discolor and release liquid if it waits, and cakes added to a cool pan absorb more oil and turn greasy. A hot pan sears the surface so the cakes brown crisply and hold together.
Swap the onion
How well each one fits the dish's main ingredients (potato, egg, butter):
- Chivefits better
- Asparagusfits better
- Leekfits about as well
- Onionthe original
Fit is the average pairing score against potato, egg, butter. 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.
More potato pancakes recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Potato Croquettes255 recipes
Potato Rolls78 recipes
Potato Chips53 recipes
Sweet Potato Croquettes53 recipes