Why it works: Onion and potato are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Celery Soup
Ingredients
Directions
Prepare and cook
Wash, peel, and chop the celery, onion, and potato.
Cook the vegetables in ½ cup of water until tender.
Strain and serve
Rub the mixture through a sieve back into the saucepan.
Season with pepper and coarse sea salt, then add the butter.
Bring to a boil 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.
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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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Celery + potatotop 7% of all pairsSmell alikemoderateCooked together2,047 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 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
- Potato
- Starch thickens the soup and gives it a smooth, body-rich texture once cooked and pureed.
- Celery
- Provides the main fresh, savoury vegetable flavour of the soup.
- Onion
- Softens as it cooks, adding aromatic sweetness to the base.
- Butter
- Adds fat that gives the finished soup richness and a rounder mouthfeel.
The step that matters
Cook the vegetables until tender. Vegetables that are not fully tender stay fibrous and will not pass smoothly through a sieve. Full cooking also lets the potato starch soften and thicken the soup properly.
Swap the celery
How well each one fits the dish's main ingredients (onion, butter, potato, pepper):
- Garlicfits better
- Parsleyfits better
- Thymefits better
- Celerythe original
Fit is the average pairing score against onion, butter, potato, pepper. 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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