Why it works: Carrot and pepper match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 14,555 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Carrot Soup
Ingredients
Directions
Prepare
Dissolve MARMITE in hot water.
Wash rice and parboil it.
Make the soup
In a stewpan, combine parboiled rice, shredded vegetables, and bay leaves.
Fry bacon pieces until slightly crispy and add to the stewpan.
Boil until vegetables are tender.
Remove bay leaves and strain the soup through a fine sieve.
Finish and serve
Return the soup to the stewpan, season if necessary, and add milk and a small piece of butter.
Bring to a boil again before serving.
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.
Photo for illustrative purposes only · Contact us to use it
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.
-
Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + oniontop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + ricetop 7% of all pairsSmell alikestrongCooked together2,477 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Rice + milktop 7% of all pairsSmell alikemoderateCooked together7,374 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Onion + ricetop 9% of all pairsSmell alikemoderateCooked together10,433 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Carrots
- Provide the main body, sweetness and colour of the soup as they soften.
- Onions
- Add savoury depth and aroma as they cook down into the soup.
- Rice
- Thickens the soup as its starch releases during boiling.
- Bacon
- Adds salty, smoky fat and savoury flavour to the broth.
- Milk
- Adds creaminess and softens the flavour at the end.
- Marmite
- Contributes concentrated savoury, umami flavour to the hot water base.
The step that matters
Boil until vegetables are tender. Carrots and onions must be fully softened so they break down and blend smoothly when straining. Undercooked pieces stay firm, leave a grainy texture and hold back the soup's body.
Swap the onion
How well each one fits the dish's main ingredients (carrot, rice, milk, pepper):
- Capsicumfits better
- Potatofits better
- Parsnipfits better
- Onionthe original
Fit is the average pairing score against carrot, rice, milk, 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.
More carrot soup recipes
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.

Rice Fritters84 recipes
Steamed Rice48 recipes
Rice Griddle Cakes28 recipes
Rice and Cheese Casserole23 recipes