Why it works: Carrot and parsnip match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,097 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Vegetable Soup
2 quartsIngredients
Directions
Make the soup
Boil the vegetables in the water for 2½ hours, stirring often.
If the water boils away too quickly, add more to maintain 2 quarts of soup.
In a bowl, mix the butter, flour, mustard, salt, and pepper with a teacup of cold water.
Stir this mixture into the soup and boil for 10 minutes.
Finish and serve
Place the yolks of the eggs in a serving tureen, pour the soup over them, stir well, and 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.
Photo for illustrative purposes only · Contact us to use it
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 + parsniptop 1% of all pairsSmell alikestrongCooked together1,097 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Carrot + potatotop 4% of all pairsSmell alikestrongCooked together3,107 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Parsnip + mustardtop 6% of all pairsSmell alikestrongCooked together89 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Parsnip + potatotop 6% of all pairsSmell alikemoderateCooked together353 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Carrot
- Adds sweetness and body as it softens into the broth.
- Parsnip
- Adds sweetness and a thicker texture as it cooks down.
- Potato
- Releases starch that helps thicken the soup.
- Flour
- Thickens the broth when stirred in and boiled.
- Egg yolks
- Enrich the soup and give it a richer, smoother body when stirred in.
The step that matters
Stirring the egg yolks into the soup. Pouring hot soup over yolks in the tureen gently warms them. Stirring well spreads the heat evenly so the yolks thicken smoothly rather than curdling in pockets.
Swap the mustard
How well each one fits the dish's main ingredients (carrot, parsnip, potato, butter, flour, pepper, egg):
- Leekfits better
- Turnipfits better
- Beetrootfits better
- Mustardthe original
Fit is the average pairing score against carrot, parsnip, potato, butter, flour, 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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