Why it works: Celery and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 6,810 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Potato Soup
Ingredients
Directions
Make the soup
Scald the milk with the onion, then remove the onion.
Slowly add the milk to the riced potatoes.
Make a white sauce using the milk mixture and the remaining ingredients, except for the parsley.
Just before serving, stir in the chopped parsley.
Variation
You can also use cold mashed potatoes and heat them with the milk.
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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Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Riced potatoes
- Provide the bulk and body of the soup, thickening it as their starch disperses into the liquid.
- Milk
- Supplies the liquid base and creamy richness of the soup.
- Butter
- Adds fat and flavour to the white sauce and helps carry the seasonings.
- Flour
- Thickens the white sauce when cooked with butter, giving the soup a smoother, more cohesive texture.
The step that matters
Adding the milk to the potatoes. Adding the milk slowly lets the potatoes absorb it evenly, so the soup stays smooth rather than lumpy or thin in places.
Swap the onion
How well each one fits the dish's main ingredients (potato, milk, celery, pepper, butter, flour, parsley):
- Carrotfits better
- Chivefits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against potato, milk, celery, pepper, butter, flour, parsley. 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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