Why it works: Potato and onion 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 ↓
Pepper Pot
Ingredients
Directions
Prepare the tripe
Boil the tripe in cold water for several hours the day before making the soup.
Discard the liquid and cut the tripe into small pieces.
Make the soup
In a soup pot, combine the tripe with 3 quarts of cold water and bring to a simmer.
Strain the mixture and return the liquid to the pot.
Add the minced onion, herbs, and diced potatoes to the pot.
Bring to a boil, season with salt and pepper, and thicken with butter and flour.
Add small dumplings and cook for 20 minutes 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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tripe
- Provides the main body and chewy texture of the soup.
- Potatoes
- Break down partly as they cook, adding body and starch to the broth.
- Flour
- Starch that thickens the broth as it heats, giving it a fuller consistency.
- Butter
- Fat that is worked with flour to help it blend smoothly and add richness.
- Onion
- Adds savoury aroma and sweetness as it cooks into the broth.
The step that matters
Thickening with butter and flour. Flour added to hot liquid without being blended with fat first can clump, leaving lumps and a raw starchy taste. Mixing it with butter and then whisking it into the simmering soup lets the starch disperse and thicken evenly.
Swap the onion
How well each one fits the dish's main ingredients (veal, potato, butter, flour, pepper):
- Chivefits better
- Leekfits about as well
- Carrotfits about as well
- Onionthe original
Fit is the average pairing score against veal, potato, butter, 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.
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