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 ↓
Escalloped Fish
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Make the sauce
Preheat the oven to 350°F (175°C).
Melt the butter in a saucepan, then whisk in the flour until smooth.
Gradually stir in the boiling milk and cook until the sauce thickens.
Chop the hard-boiled eggs and mix them into the sauce.
Assemble and bake
In a deep dish, layer the cod fish and pour the sauce over it.
Repeat the layers until the dish is filled.
Cover the top with cracker crumbs.
Bake for 30 minutes.
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.
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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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Fish + buttertop 12% of all pairsSmell alikemoderateCooked together4,488 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Fish + milktop 13% of all pairsSmell alikemoderateCooked together1,432 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Flour + milktop 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
- Cod fish
- Forms the main body of the dish, providing the flaky texture and savory flavor.
- Butter
- Fat that enriches the sauce and carries flavor through the base.
- Flour
- Thickens the milk into a smooth sauce that holds the layers together.
- Milk
- Liquid base of the sauce, giving it body and a creamy texture when thickened.
- Hard-boiled eggs
- Add richness and body to the sauce, with a soft, firm texture.
- Cracker crumbs
- Form a crisp topping that browns in the oven.
The step that matters
Thickening the sauce. Flour must be whisked into the melted butter until smooth, then the boiling milk added gradually, so starch granules swell evenly. Adding milk too fast or skipping the whisking can leave lumps and a thin sauce that fails to hold the layers.
“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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