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 ↓
A Fondu
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Preheat the oven to 350°F (175°C).
In a bowl, mix potato flour, grated cheese, butter, milk or cream, salt, and pepper until smooth.
Add the beaten yolks of the eggs and mix well.
Fold and bake
In a separate bowl, whisk the egg whites until frothy.
Gently fold the egg whites into the batter.
Pour the mixture into a deep soup plate or dish, filling it halfway.
Bake in the preheated oven until risen and golden.
Serve
Serve immediately to prevent it from falling.
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 + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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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).
-
Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Cheese + milktop 10% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whites trap air for lift, and yolks add richness and set the structure as they cook.
- Potato flour
- Thickens the cheese base so it holds the risen egg foam without collapsing.
- Grated cheese
- Adds savory flavor and fat, and helps the base firm as it bakes.
- Butter
- Adds fat for richness and a smooth, tender texture in the base.
- Milk or cream
- Adds moisture so the base blends smoothly and stays tender.
The step that matters
Folding in the egg whites. Whites must be whisked to foam and folded in gently, since deflating the air bubbles removes the lift that makes the soufflé rise.
Swap the potato
How well each one fits the dish's main ingredients (flour, cheese, butter, milk, pepper, egg):
- Potatothe original
- Capsicumfits about as well
- Asparagusfits about as well
- Chivefits about as well
Fit is the average pairing score against flour, cheese, butter, milk, pepper, egg. 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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