Why it works: Thyme and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,057 recipes. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓
Potato Soup
Ingredients
Directions
Prepare the vegetables
Peel and wash the potatoes, then boil until cooked.
Slice the onion.
Fry the sliced onion in butter without letting it turn color.
Add a little water or stock to the onion.
Boil until tender.
Rub the potatoes and onion through a wire sieve.
Make the soup
Add the mixture to the boiled milk with the bay leaf.
Return to the fire.
Bring to a boil.
Add the sago.
Add a pinch of thyme.
Add chopped blanched parsley.
Add salt and pepper.
Boil until clear.
Serve
Serve very hot.
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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Thyme + parsleytop 1% of all pairsSmell alikestrongCooked together9,057 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Parsley + peppertop 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).
-
Thyme + peppertop 4% of all pairsSmell alikemoderateCooked together11,585 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 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
- Potatoes
- Provide starch and body, thickening the soup when rubbed through a sieve.
- Butter
- Fat that softens the onion and carries flavour into the soup.
- Milk
- Forms the liquid base and adds creaminess and sweetness.
- Sago
- Starch that thickens the soup and turns it clear as it boils.
- Onion
- Adds savoury aromatic flavour that deepens as it softens in butter.
The step that matters
Fry the onion without browning. Colouring the onion adds bitter, toasted flavours that clash with the delicate milk base. Gentle frying keeps the taste mild and sweet.
Swap the onion
How well each one fits the dish's main ingredients (potato, butter, thyme, milk, parsley, pepper):
- Carrotfits better
- Parsnipfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against potato, butter, thyme, milk, parsley, 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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