Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓
Scalloped Potatoes
Ingredients
Directions
The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 400°F (200°C).
Make the mixture
In a bowl, stir together the mashed potatoes, melted butter, and cream.
Add the raw egg and mix well.
If the mixture is too moist, beat in a few fine bread crumbs.
Bake
Transfer to a baking dish and bake for 10 minutes until the top is a rich 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.
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 + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Egg + breadtop 13% of all pairsSmell alikemoderateCooked together22,662 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
- Mashed potatoes
- Form the body of the dish, providing the bulk that the other ingredients bind and bake.
- Raw egg
- Binds the mixture so it holds together and sets as it bakes.
- Melted butter
- Adds fat for richness and helps the top brown in the oven.
- Cream or milk
- Adds moisture and softness to the potato mixture.
The step that matters
Adding bread crumbs only if the mixture is too moist. Bread crumbs absorb excess liquid, so the mixture holds its shape. Adding them when the mixture is not too moist can make the dish dense and dry.
Swap the potato
How well each one fits the dish's main ingredients (cream, butter, pepper, egg, bread):
- Asparagusfits about as well
- Capsicumfits about as well
- Spinachfits about as well
- Potatothe original
Fit is the average pairing score against cream, butter, pepper, egg, bread. 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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