Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Baked Codfish
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Soak, boil, and pick the salt codfish as you would for fish balls.
Add an equal quantity of mashed or chopped potatoes, a large piece of butter, and enough warm milk to make it soft.
Bake and serve
Transfer the mixture to a buttered dish, rub butter over the top, and sprinkle with sifted flour.
Bake at 400°F (200°C) for about 30 minutes, until rich brown.
Serve with drawn butter sauce and sliced hard‑boiled eggs.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Salt codfish
- Provides the main flavour and the flaked body of the dish.
- Potatoes
- Add starch and bulk, giving the mixture a soft, creamy texture.
- Warm milk
- Adds moisture so the mixture becomes soft and spreadable.
- Butter
- Adds richness and helps the top brown in the oven.
- Sifted flour
- Dusted on top, it helps the surface brown and form a light crust.
The step that matters
Bake until rich brown. Baking at 400°F until the top is rich brown develops browning through the Maillard reaction. Removing it too early leaves the top pale and the flavour flat.
Swap the potato
How well each one fits the dish's main ingredients (butter, milk, flour):
- Potatothe original
- Arrowrootfits about as well
- Leekfits less well
- Shallotfits less well
Fit is the average pairing score against butter, milk, flour. 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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