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 ↓
Ox Heart Stewed
Ingredients
Directions
Make the stew
Place the ox heart pieces in a stew pot with salt and enough liquid to cover them. Skim off any scum that rises to the surface.
Add the chopped onions, celery, and parboiled potatoes. Let the mixture stew gently until all ingredients are tender.
Thicken and serve
About 15 minutes before serving, mix the butter, flour, and ketchup or walnut pickles together. Stir this mixture into the stew to thicken it.
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).
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Celery + potatotop 7% of all pairsSmell alikemoderateCooked together2,047 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + celerytop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
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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
- Ox heart
- Provides the main meat, which becomes tender through long, gentle stewing.
- All-purpose flour
- Thickens the stew's liquid when combined with butter and stirred in.
- Butter
- Adds richness and helps the flour blend smoothly into the stew.
- Potatoes
- Soften during stewing and add body to the broth.
- Onions
- Break down while stewing, adding sweetness and depth to the broth.
The step that matters
Stirring in the butter and flour mixture. Flour thickens best when it is blended with fat first and stirred in while the liquid is hot, which helps prevent lumps. Adding it too early or dropping it in unmixed can leave the stew clumpy or thin.
Swap the celery
How well each one fits the dish's main ingredients (meat, onion, potato, butter, flour, ketchup):
- Capersfits better
- Garlicfits better
- Thymefits about as well
- Celerythe original
Fit is the average pairing score against meat, onion, potato, butter, flour, ketchup. 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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