Why it works: Bread and butter 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 ↓
Potatoes Au Gratin
Ingredients
Directions
Prepare the potatoes
Hash the cold boiled potatoes.
Put them on the stove with a little milk and butter.
Boil for five minutes, seasoning with salt and pepper to make them creamy.
Assemble and bake
Transfer to a baking dish.
Mix the grated cheese and bread crumbs together, then sprinkle over the potatoes.
Drizzle melted butter on top.
Bake until 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.
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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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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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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Cheese + breadtop 7% of all pairsSmell alikemoderateCooked together2,130 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cold boiled potatoes
- Form the bulk of the dish and, once heated with milk and butter, become creamy.
- Grated cheese
- Melts into the topping and browns in the oven, adding richness and flavour.
- Dry bread crumbs
- Crisp and brown on top, giving a contrasting crunchy texture.
- Butter
- Adds fat and richness, helping the potatoes turn creamy and the topping brown.
- Milk
- Moistens the potatoes so they cook into a creamy texture.
The step that matters
Boil the potatoes with milk and butter until creamy. Hashed potatoes need enough liquid and fat, plus gentle heat, to release starch and bind into a smooth, creamy mass rather than a dry, crumbly one.
Swap the potato
How well each one fits the dish's main ingredients (cheese, bread, butter, egg, milk, pepper):
- Capsicumfits about as well
- Potatothe original
- Asparagusfits about as well
- Tomatofits about as well
Fit is the average pairing score against cheese, bread, butter, egg, milk, 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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