Why it works: Tomato and pepper are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Tomato Cream Soup with Croutons.
Ingredients
Directions
Make the soup
Cut the tomatoes in four.
Put them into the boiling water with the sliced onion, bay leaves and salt.
Simmer for 20 minutes and sieve.
Melt the butter. Add the flour and a little of the soup.
When creamy add some more and go on till you have a creamy smooth soup.
Add some finely chopped parsley, pepper and the cream or milk.
Make the croutons and serve
Slice 2 white bread into cubes and remove crusts.
Butter to fry them into a golden brown.
Serve with fried bread cubes, handed round separately.
Nutrition, whole recipe (rough)
Counts 9 of 10 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 9 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Milk | 1 cup (244ml) whole | 149 |
| Butter | 1 tbsp (14g) | 102 |
| Cream | 1 tbsp (15ml) heavy | 51 |
| Onion | 1 medium (110g) | 44 |
| Tomato | 1 medium (123g) | 22 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Bay Leaf | 1 leaf (0.6g) | 2 |
| Salt | 1 tsp (6g) | 0 |
| Water | not in our table | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
Steps grouped into stages for easier reading; the method is the source's own.
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.
-
Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Provide the main body and tangy flavour of the soup.
- Flour
- Thickens the butter and soup mixture so the soup becomes creamy and smooth.
- Butter or margarine
- Adds richness and carries flavour, and browns the bread cubes.
- Cream or milk
- Adds richness and a softer, creamier texture to the finished soup.
- Onion
- Adds savoury depth to the broth as it simmers with the tomatoes.
The step that matters
Adding the flour and soup to the melted butter. Stirring in a little liquid at a time keeps the flour smooth, so it thickens evenly instead of forming lumps.
Swap the tomato
How well each one fits the dish's main ingredients (onion, butter, flour, pepper, cream):
- Potatofits better
- Leekfits better
- Chivefits better
- Tomatothe original
Fit is the average pairing score against onion, butter, flour, pepper, cream. 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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