Why it works: Potato and butter are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 6,456 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Cod-fish Balls
Ingredients
Directions
Make the mixture
Peel and boil the potatoes until tender.
Drain the water and mash the potatoes finely.
Mix in the soaked codfish, butter, and coarse sea salt.
Stir in the beaten egg and whip until light.
Let the mixture cool, then form it into balls.
Coat and fry
Dip each ball in beaten egg, then roll in cracker crumbs.
Fry in hot lard or shortening until light 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.
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
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
- Potatoes
- Provide the starchy bulk that mashes smooth and holds the fish mixture together.
- Codfish
- Supplies the main flavour and savory character of the fish balls.
- Egg
- Binds the mixture and, when whipped, adds lightness to the texture.
- Cracker crumbs
- Form a crisp, browned outer coating during frying.
The step that matters
Let the mixture cool before forming the balls. A warm, soft mash is sticky and hard to shape, and it may fall apart or absorb too much oil. Cooling firms the starch so the balls hold their shape in the hot fat.
Swap the potato
How well each one fits the dish's main ingredients (egg, butter):
- Asparagusfits better
- Chivefits better
- Leekfits about as well
- Potatothe original
Fit is the average pairing score against 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.
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