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 ↓
Potatoes with Cheese Sauce
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 the potatoes
Boil the potatoes until tender, then mash them with hot milk and melted butter.
Season with coarse sea salt and white pepper to taste.
Whip the mixture until light and mound it in the center of a fireproof platter.
Shape and bake
Smooth the sides with a knife and remove about 1 cup of potato from the center to create a cavity.
Brush the inside of the hollow and the top and sides of the mound with beaten egg white.
Place the platter in a 400°F (200°C) oven until very hot and lightly browned.
Fill and serve
Remove from the oven and fill the hollow with cheese sauce.
Sprinkle with bread crumbs and return to the oven for 5 minutes before serving.
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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Milk + buttertop 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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Butter + cheesetop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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
- Potatoes
- Form the bulk of the mound and give a soft, fluffy structure when mashed and whipped.
- Butter
- Adds richness and fat, giving the mashed potato a smooth, silky texture.
- Milk
- Adds moisture and softness, helping the mashed potato whip up light and smooth.
- Egg white
- Brushed on the surface, it sets during baking to form a firm, browned crust that holds the shape.
- Cheese sauce
- Fills the hollow with a rich, creamy centre that contrasts with the fluffy potato.
- Bread crumbs
- Form a crisp, golden topping when returned to the oven.
The step that matters
Brushing the mound with egg white before baking. Egg white sets when heated, forming a dry, firm skin that holds the mound's shape and browns evenly. Brushing it on too thinly or skipping it can leave the sides soft and slumping in the oven.
Swap the white pepper
How well each one fits the dish's main ingredients (potato, milk, butter, egg, cheese, sauce, bread):
- Nutmegfits better
- Capersfits better
- Parsleyfits better
- White pepperthe original
Fit is the average pairing score against potato, milk, butter, egg, cheese, sauce, 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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