Why it works: Rice and tomato match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 3,065 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Stuffed Green Peppers
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the peppers
Wash and clean the peppers, removing the seeds and cutting off the tops with the stems.
Steam the peppers until tender, then let them cool.
Make the filling
Fry the diced onions until soft, then mix with the cooked rice, egg, and salt.
Stuff the peppers with the rice mixture and replace the tops.
Bake
Place the stuffed peppers in a baking dish and pour the stewed tomatoes over them.
Bake at 350°F (175°C) for one hour.
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.
-
Rice + tomatotop 6% of all pairsSmell alikestrongCooked together3,065 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Rice + oniontop 9% of all pairsSmell alikemoderateCooked together10,433 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Green peppers
- Hold the filling and soften as they cook, becoming tender vessels for the stuffing.
- Cooked rice
- Bulks out the filling and absorbs moisture, giving it a soft, substantial texture.
- Egg
- Binds the rice and onion mixture so the filling holds together when served.
- Diced onions
- Add savoury flavour and moisture to the filling once softened by frying.
- Stewed tomatoes
- Add moisture and acidity, forming a sauce that bakes around the peppers.
The step that matters
Steam the peppers until tender, then let them cool. Peppers that are undercooked stay firm and may not soften fully in the oven, while overcooked peppers tear or collapse when stuffed. Cooling makes them easier to handle without losing their shape.
Swap the onion
How well each one fits the dish's main ingredients (pepper, rice, egg, tomato):
- Capsicumfits better
- Asparagusfits better
- Cucumberfits better
- Onionthe original
Fit is the average pairing score against pepper, rice, egg, 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.
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.
Tomato Soup526 recipes
Cream of Tomato Soup107 recipes
Rice Fritters84 recipes
Tomato Bisque61 recipes