Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Mashed Potato Soup
Ingredients
Directions
Melt butter in saucepan and sauté carrots, celery and onion until tender.
Add cream and heat almost to a boil. Do not boil. Add potatoes and stir until blended.
Season with salt and pepper. Garnish with chopped parsley.
Nutrition, whole recipe (rough)
What these numbers assume: 9 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Potato | 1 medium (173g) baked | 161 |
| Butter | 1 tbsp (14g) | 102 |
| Cream | 1 tbsp (15ml) heavy | 51 |
| Onion | 1 medium (110g) | 44 |
| Carrot | 1 medium (61g) | 25 |
| Celery | 1 stalk (40g) | 6 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Parsley | 1 tbsp chopped fresh (3.8g) | 1 |
| Salt | 1 tsp (6g) | 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.
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Carrot + celerytop 1% of all pairsSmell alikestrongCooked together10,173 recipes
Shared aroma: myristicin (spice, warm).
-
Celery + parsleytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 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
- Butter
- Fat that softens the vegetables and carries flavour into the soup.
- Cream
- Adds richness and a smooth, velvety body to the soup.
- Mashed potatoes
- Thickens the soup and gives it a creamy, substantial texture.
- Carrots
- Add natural sweetness and body as they soften in the butter.
- Onion
- Builds savoury depth as it softens and turns sweet while cooking.
The step that matters
Heat the cream without boiling. Boiling cream can cause it to separate or scorch on the bottom of the pan, leaving the soup grainy and less smooth. Heating it gently until just under boiling keeps it silky.
Swap the onion
How well each one fits the dish's main ingredients (butter, cream, carrot, potato, celery, pepper, parsley):
- Parsnipfits better
- Leekfits better
- Turnipfits about as well
- Onionthe original
Fit is the average pairing score against butter, cream, carrot, potato, celery, pepper, parsley. 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
Potato Croquettes255 recipes
Carrot Soup134 recipes
Cream of Celery Soup113 recipes
Potato Rolls78 recipesThe 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.