Why it works: Fish and potato work together. They rank in the top 15% of all ingredient pairs, and cooks put them together in 134 recipes. Both carry (e,z)-2,6-nonadienal, which smells cucumber, melon. The science ↓
Fish Croquettes
Ingredients
Directions
Prepare
Pick the cold fish into small pieces.
Mix in the mashed potato and season to taste.
Shape and coat
Form the mixture into balls.
Dip the balls in beaten egg, then roll in cracker crumbs.
Fry
Fry in hot lard 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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Fish + potatotop 15% of all pairsSmell alikemoderateCooked together134 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
-
Fish + eggtop 22% of all pairsSmell alikemoderateCooked together2,782 recipes
Shared aroma: 2-nonenal (fatty, green).
-
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
- Cold fish
- Provides the main protein and flavor that forms the body of the croquettes.
- Mashed potato
- Adds starch and moisture that help the mixture bind and stay tender inside.
- Egg
- Binds the coating so the cracker crumbs adhere evenly to the balls.
- Cracker crumbs
- Form a crisp outer crust that browns during frying.
- Lard
- Conducts heat for frying and promotes browning and a crisp exterior.
The step that matters
Fry in hot lard until golden brown. If the lard is not hot enough, the coating absorbs oil and turns greasy before it crisps. Hot fat sets the crust quickly, keeping the inside moist and the outside crisp and browned.
Swap the potato
How well each one fits the dish's main ingredients (fish, egg):
- Asparagusfits better
- Chivefits about as well
- Leekfits about as well
- Potatothe original
Fit is the average pairing score against fish, egg. 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
Fried Fish120 recipes
Potato Rolls78 recipes
Scalloped Cod69 recipes