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 ↓
Rice Hash
Ingredients
Directions
Prepare
Mix the chopped cold meat, diced potatoes, bread crumbs, chopped parsley, boiled rice, and chopped tomatoes in a bowl.
Melt the butter in a frying pan over medium heat.
Cook
Add the chopped onion and fry until light brown.
Stir in the meat mixture and season to taste.
Simmer for 1 hour, stirring occasionally.
Serve hot on toast.
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 + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Potato + tomatotop 5% of all pairsSmell alikestrongCooked together2,798 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Rice + tomatotop 6% of all pairsSmell alikestrongCooked together3,065 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Potato + ricetop 7% of all pairsSmell alikestrongCooked together851 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cold meat
- Forms the main body of the hash and adds savoury flavour.
- Potatoes
- Add starch and bulk, helping the hash hold together and turn tender.
- Bread crumbs
- Absorb moisture and help bind the mixture together.
- Boiled rice
- Adds bulk and a soft texture to the hash.
- Onion
- Frying until light brown adds sweetness and depth of flavour.
- Tomatoes
- Add moisture and acidity that brighten the mixture.
The step that matters
Simmer for 1 hour, stirring occasionally. A long, gentle simmer lets the potatoes soften and the flavours blend, while occasional stirring prevents sticking and scorching on the base of the pan.
Swap the parsley
How well each one fits the dish's main ingredients (meat, potato, bread, butter, onion, rice, tomato):
- Garlicfits better
- Thymefits about as well
- Celeryfits about as well
- Parsleythe original
Fit is the average pairing score against meat, potato, bread, butter, onion, rice, tomato. 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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