Why it works: Mushroom and tomato are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,719 recipes. Both carry 1-octen-3-one, which smells mushroom, metallic. The science ↓
Mock Turtle Soup
Ingredients
Directions
Prepare the broth
Prepare the calf's head by cleaning it thoroughly.
Place the head in a large pot and cover with water.
Add the herbs and spices, butter, onions, and mushrooms.
Simmer until the meat is tender and can be easily removed.
Strain the broth and return it to the pot.
Finish the soup
Add flour, tomato pulp, red currant jelly, and salt.
Bring to a boil.
Simmer for an additional ten minutes.
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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Mushroom + tomatotop 7% of all pairsSmell alikemoderateCooked together2,719 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + mushroomtop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour 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
- Calf's head
- Provides the meat and gelatin that give the soup its body and rich texture.
- Onions
- Build savory depth and aromatic sweetness in the broth as they cook down.
- Mushrooms
- Add earthy umami flavor to the broth.
- Flour
- Thickens the broth so it has a fuller, smoother body.
- Tomato pulp
- Adds acidity and color, balancing the richness of the broth.
- Red currant jelly
- Adds sweetness and a tart fruity note that balances the savory broth.
Swap the red currant
How well each one fits the dish's main ingredients (butter, onion, mushroom, flour, tomato):
- Avocadofits better
- Plumfits better
- Cherryfits better
- Red currantthe original
Fit is the average pairing score against butter, onion, mushroom, flour, tomato. 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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