Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Buttered Rice
Ingredients
Directions
Prepare the rice
Boil the rice and dry it.
Heap the rice in a deep dish.
Make the sauce
Fry the sliced onion in butter until light brown.
Strain the onion out.
Add the minced green pepper to the hot butter and cook until tender.
Stir in the lemon juice.
Serve
Pour the sauce over the rice and serve.
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.
-
Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
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).
-
Rice + lemontop 12% of all pairsSmell alikemoderateCooked together4,366 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rice
- Forms the bulk of the dish and holds the buttery sauce poured over it.
- Butter
- Carries flavour and richness, and browns to add a nutty taste to the sauce.
- Onion
- Frying until light brown sweetens the butter and adds savoury aroma, then it is strained out.
- Green pepper
- Softens in the hot butter, adding a fresh, slightly sharp vegetable aroma to the sauce.
- Lemon juice
- Adds acidity that brightens the rich butter sauce.
The step that matters
Frying the onion in butter until light brown. Browning develops sweet, savoury flavour through caramelization and browning reactions. Heat that is too high or cooking that goes too long can scorch the butter and onion, leaving a bitter taste that spoils the whole sauce.
Swap the onion
How well each one fits the dish's main ingredients (rice, butter, pepper, lemon):
- Asparagusfits better
- Capsicumfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against rice, butter, pepper, lemon. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Lemon Sauce236 recipes
Rice Fritters84 recipes
Steamed Rice48 recipes
Rice Griddle Cakes28 recipes