Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Cheese Souffle
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.
Make the base
Mix flour with a part of the milk to form a smooth paste.
Add the remaining milk and stir over heat until thickened.
Set aside to cool.
Add the flavourings and cheese
In a bowl, mix egg yolks, salt, dry mustard, red pepper, onion juice, and grated cheese.
Stir this mixture into the cooled batter.
Fold, bake and serve
Fold in the beaten egg whites.
Bake in ramekins at 400°F (200°C) for 20 minutes and serve immediately.
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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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Milk + cheesetop 10% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Mustard + cheesetop 11% of all pairsSmell alikemoderateCooked together1,805 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Milk
- Forms the liquid base that the flour thickens into a smooth sauce.
- Flour
- Thickens the milk into a smooth white sauce that holds the soufflé together.
- Egg yolks
- Enrich the base and add richness and structure as they set in the oven.
- Egg whites
- Beaten and folded in, they trap air that makes the soufflé rise and become light.
- Grated cheese
- Adds savoury flavour and fat, and helps give the soufflé its body.
The step that matters
Fold in the beaten egg whites. Folding gently keeps the air trapped in the whites. Stirring or deflating the mixture removes that air, so the soufflé rises less and turns dense.
Swap the onion
How well each one fits the dish's main ingredients (milk, flour, egg, mustard, pepper, cheese):
- Chivefits better
- Capsicumfits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against milk, flour, egg, mustard, pepper, cheese. 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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