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 ↓
A Recipe for Meat and Vegetable Soup
Ingredients
Directions
Make the broth
Wash the soup bone and place it in a large kettle with cold water.
Heat for 3 hours, then remove the bone and meat.
Add the vegetables
Chop the cabbage, onion, carrot, potato, and tomatoes, and add them to the soup.
Boil the mixture for 1 hour.
Finish the soup
Thicken slightly with flour and season with salt and pepper.
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.
-
Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + potatotop 4% of all pairsSmell alikestrongCooked together3,107 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
-
Potato + tomatotop 5% of all pairsSmell alikestrongCooked together2,798 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cabbage + peppertop 5% of all pairsSmell alikemoderateCooked together4,081 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 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
- Soup bone
- Releases flavor and gelatin into the water during long simmering, giving the broth body.
- Potato
- Its starch softens during boiling and helps lightly thicken the soup.
- Flour
- Starch that thickens the broth slightly when it is stirred in.
The step that matters
Thicken slightly with flour. Flour lumps easily if added dry to hot liquid. Blending it with a little cold water or stirring it in gradually keeps the soup smooth and evenly thickened.
Swap the cabbage
How well each one fits the dish's main ingredients (onion, carrot, potato, tomato, flour, pepper):
- Capsicumfits better
- Okrafits better
- Parsnipfits better
- Cabbagethe original
Fit is the average pairing score against onion, carrot, potato, tomato, flour, 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Indian Spiced Potato Soup with Tofu and Spinach448 recipes
Cream of Potato Soup38 recipes
Tomato Bisque11 recipes
Clear Carrot and Bottle Gourd Soup65 recipes