Why it works: Milk and butter 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 ↓
Mont Blanc Potato
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Wash and pick over the potatoes to remove dead leaves and coarse stems.
Cook the potatoes in boiling salted water for 25 minutes.
Drain and press the potatoes in a colander.
Chop the potatoes finely.
Make the mixture
Return the chopped potatoes to a saucepan.
Add butter, pepper, and vinegar, then stir the mixture.
Toss until very hot.
Whip the potatoes with a wooden or silver fork.
Gradually add hot milk.
Beat in the frothed egg whites.
Bake and serve
Heap the mixture in a deep dish.
Bake in a 400°F (200°C) oven until the surface hardens slightly, removing before it turns brown.
Brush lightly with butter, then serve.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Provide the starchy body that the mash holds together and bakes into.
- Eggs
- Whites whipped in add airiness and help the dish set as it bakes.
- Milk
- Adds moisture and softness to the mashed potato.
- Butter
- Adds fat for richness and a smooth texture.
The step that matters
Remove before it turns brown. Baking until the surface just hardens keeps the interior light and moist. Leaving it longer lets the surface brown further and the egg-enriched mash dry out and toughen.
Swap the potato
How well each one fits the dish's main ingredients (milk, egg, butter, pepper, vinegar):
- Capsicumfits better
- Potatothe original
- Asparagusfits about as well
- Mustardfits less well
Fit is the average pairing score against milk, egg, butter, pepper, vinegar. 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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