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 the vegetables
Wash the celery and cut it into small pieces.
Peel the potato and onion, then boil them with the celery in just enough water to cover.
Once tender, strain the mixture through a wire sieve.
Make the soup
Add the white stock and bring to a boil again.
Season with mace, bay leaf, salt, and pepper.
Stir in the milk and let it sit for ten minutes.
Mix the cornflour with a little cold water, then stir it into the soup until it thickens.
Remove the mace and bay leaf.
Finish and serve
Whip the cream and stir it in just before serving.
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).
-
Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + celerytop 7% of all pairsSmell alikemoderateCooked together2,047 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + celerytop 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
- Celery
- Provides the main flavour and body of the soup.
- Milk
- Adds creaminess and mild sweetness to the soup.
- Cream
- Adds richness and a smooth, velvety texture when whipped in at the end.
- Flour or cornflour
- Thickens the soup as it is heated, giving it body.
- Potato
- Adds starch that helps thicken and smooth the soup.
- White stock
- Forms the liquid base and carries the savoury flavour.
The step that matters
Stirring in the thickener. Starch must be mixed smoothly into cold water first, then stirred into the hot soup, or it clumps. It thickens as it heats and needs a brief simmer to reach full thickness.
Swap the mace
How well each one fits the dish's main ingredients (milk, cream, flour, onion, potato, celery, pepper):
- Parsleyfits better
- Turmericfits better
- Thymefits better
- Macethe original
Fit is the average pairing score against milk, cream, flour, onion, potato, celery, 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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