Why it works: Pepper and onion are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Ilvsiied Ox Heart
Ingredients
Directions
Prepare the heart
Cut the heart into slices ¼ inch thick.
Sprinkle both sides with pepper, salt, and dried flour.
Make the sauce
In a stewpan, combine the onion, brown sugar, and vinegar.
Dissolve the sugar, then add the gravy or water.
Simmer and serve
Add the heart to the pan and shake it.
Simmer gently over low heat for 20 minutes.
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.
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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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Sugar + vinegartop 15% of all pairsSmell alikemoderateCooked together20,806 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ox heart
- Forms the main body of the dish, becoming tender with gentle simmering.
- Dried flour
- Coats the slices and thickens the liquid as it simmers.
- Vinegar
- Adds acidity that sharpens the flavour of the sauce.
- Brown sugar
- Balances the sharpness of the vinegar and adds depth of sweetness.
- Onion
- Adds aromatic flavour to the sauce as it cooks.
The step that matters
Simmer gently over low heat. Ox heart is a tough muscle meat. Gentle, low heat over a sustained period breaks down its connective tissue slowly, while a rolling boil would toughen and dry the surface.
Swap the onion
How well each one fits the dish's main ingredients (pepper, flour, sugar, vinegar):
- Capsicumfits better
- Mustardfits better
- Shallotfits better
- Onionthe original
Fit is the average pairing score against pepper, flour, sugar, vinegar. 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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