Why it works: Carrot and onion are a kitchen classic. They rank in the top 6% of all ingredient pairs, and cooks put them together in 21,601 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Cheese Soup
Ingredients
Directions
Make the base
In a double boiler, heat the milk with the carrot, onion, and mace for 30 minutes.
Remove the vegetables from the milk.
Make the soup
In a separate bowl, blend the flour and butter, adding a little milk to create a white sauce.
Stir the white sauce into the milk and cook until it thickens slightly.
Remove from heat and stir in the grated cheese and beaten egg.
Season with salt and pepper to taste.
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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Carrot + oniontop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Butter + parmesan cheesetop 9% of all pairsSmell alikemoderateCooked together4,163 recipes
Shared aroma: guaiacol (smoky, sweet).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Carrot + flourtop 13% of all pairsSmell alikemoderateCooked together8,029 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
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 sauce and cheese are added to.
- Flour
- Thickens the milk into a white sauce as it cooks.
- Butter
- Combines with the flour to form the roux that thickens the soup.
- Parmesan cheese
- Adds savory flavor and richness to the finished soup.
- Egg
- Adds body and richness to the soup when stirred in off the heat.
The step that matters
Stirring in the egg off the heat. Egg proteins set at high heat and can curdle or scramble in hot liquid. Removing the pan from the heat before adding the beaten egg and cheese helps keep the soup smooth.
Swap the mace
How well each one fits the dish's main ingredients (milk, carrot, onion, flour, butter, parmesan cheese, egg):
- Parsleyfits better
- Celeryfits better
- Nutmegfits better
- Macethe original
Fit is the average pairing score against milk, carrot, onion, flour, butter, parmesan cheese, 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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