Why it works: Onion and potato 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 ↓
Fish Chowder
Ingredients
Directions
Prepare
Clean, bone, and skin the haddock, then boil the head separately in water.
In a kettle, fry slices of salt pork until browned.
Thinly slice the onions and fry them in the salt pork fat with a little water, covering while frying.
Make the chowder
Layer the fish and then the potatoes in the kettle, pouring in the water from the boiled haddock head.
Cook until the potatoes can be easily pierced with a fork.
Add milk to the kettle and let it boil once.
Season with coarse sea salt and black pepper, then add a lump of butter.
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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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pork + potatotop 5% of all pairsSmell alikemoderateCooked together2,668 recipes
Shared aroma: sotolon (curry, maple).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Haddock
- Forms the flesh of the chowder and flakes as it cooks, giving the main body of the dish.
- Salt pork
- Its rendered fat carries flavour into the onions and adds savoury richness to the broth.
- Onions
- Soften and sweeten as they fry, adding aromatic depth to the chowder.
- Potatoes
- Cook until tender and thicken the broth slightly, giving the chowder body.
- Milk
- Adds creaminess and mild sweetness to the broth.
- Butter
- Adds fat and a rounded richness to the finished chowder.
The step that matters
Adding the milk. Once milk is added, letting it boil only once helps prevent it from curdling or scorching on the bottom of the kettle, keeping the broth smooth.
Swap the onion
How well each one fits the dish's main ingredients (haddock, pork, potato, milk, butter, pepper):
- Capsicumfits about as well
- Onionthe original
- Tomatofits about as well
- Chivefits about as well
Fit is the average pairing score against haddock, pork, potato, milk, butter, pepper. 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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