Why it works: Lentils and onion match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 1,221 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Lentils with Rice
Ingredients
Directions
Cook the rice
Wash the rice.
Add the rice to a large kettle of boiling water.
Boil rapidly for 30 minutes.
Drain the rice in a colander.
Let it sit at the oven door for 10-15 minutes to dry.
Fry the onion
In a frying pan, melt the butter over medium heat.
Add the sliced onion and cook until golden brown.
Combine and serve
Boil the lentils as directed in the previous recipe.
Add the lentils and rice to the pan.
Stir over the heat for 15 minutes.
Season with salt and pepper.
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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Lentils + oniontop 8% of all pairsSmell alikestrongCooked together1,221 recipes
Shared aroma: coumarin (sweet, hay).
-
Lentils + ricetop 8% of all pairsSmell alikemoderateCooked together256 recipes
Shared aroma: coumarin (sweet, hay).
-
Rice + oniontop 9% of all pairsSmell alikemoderateCooked together10,433 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Rice + peppertop 12% of all pairsSmell alikemoderateCooked together8,379 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lentils
- Provide protein-rich body and a hearty, substantial texture to the dish.
- Rice
- Forms the bulk of the dish and absorbs flavour while adding a soft, starchy texture.
- Butter
- Adds richness and fat, helping the onion brown and carrying flavour through the dish.
- Onion
- Browns in the butter to add sweetness and savoury aroma.
The step that matters
Drying the rice after boiling. Letting drained rice rest in gentle warmth lets surface moisture evaporate, so the grains stay separate instead of turning sticky when combined with the lentils.
Swap the lentils
How well each one fits the dish's main ingredients (rice, butter, onion, pepper):
- Black-eyed peafits better
- Sesamefits better
- Beansfits better
- Lentilsthe original
Fit is the average pairing score against rice, butter, onion, 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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