Why it works: Parsley and celery match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 6,810 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Filled Fish Balls
Ingredients
Directions
Prepare the fish
Salt the haddock overnight.
Scrape the fish from the bone and skin, then chop it finely with the onion.
While chopping, add a little cold water, parsley, nutmeg, pepper, and celery salt to taste.
Soak enough bread in cold water to make two good handfuls when squeezed.
Add the soaked bread, melted butter, and beaten eggs to the chopped fish mixture.
Form the mixture into about 15 balls.
Cook and thicken
In a kettle reserved for fish, place a plate at the bottom and add enough water to cover the fish balls.
Boil for 30 to 45 minutes, then drain the water, leaving 1 quart.
In a bowl, mix the milk, sugar, and flour until smooth, then add to the reserved water.
Return the fish balls to the kettle and boil until the mixture thickens.
Serve
Serve deliciously with broad noodles topped with browned fine noodles.
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.
-
Parsley + celerytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Parsley + nutmegtop 3% of all pairsSmell alikestrongCooked together5,062 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Pepper + celerytop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Haddock
- Provides the main body of the balls, with flaky white flesh that sets when cooked.
- Eggs
- Bind the chopped fish and bread so the balls hold their shape while boiling.
- Bread
- Soaked bread adds moisture and softness, keeping the fish balls tender rather than dense.
- Butter
- Adds richness and moisture to the fish mixture.
- Milk
- Forms the base of the thickened sauce, adding creaminess as it heats.
- Flour
- Thickens the milk mixture into a smooth sauce when it boils.
The step that matters
Boil the milk and flour mixture until it thickens. Flour must be mixed smooth before it goes in, otherwise it clumps. It thickens as it heats, so the sauce needs to boil until it coats a spoon.
Swap the onion
How well each one fits the dish's main ingredients (haddock, parsley, nutmeg, pepper, celery, bread, butter):
- Carrotfits better
- Potatofits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against haddock, parsley, nutmeg, pepper, celery, bread, 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.
Brown Bread461 recipes
Cream of Celery Soup113 recipes
White Bread80 recipes
Bread Omelette60 recipes