Why it works: Turnip and cabbage match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 897 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Vegetable Soup
Ingredients
Directions
Prepare and cook
Chop all vegetables finely.
Boil in water for 40 minutes.
Season and finish
Season with salt, pepper, and plenty of butter.
Just before serving, add ½ cup of sweet cream.
Optionally, use a soup bone or meat broth instead of butter.
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.
-
Turnip + cabbagetop 2% of all pairsSmell alikestrongCooked together897 recipes
Shared aroma: coumarin (sweet, hay).
-
Turnip + barleytop 2% of all pairsSmell alikestrongCooked together629 recipes
Shared aroma: coumarin (sweet, hay).
-
Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + corntop 5% of all pairsSmell alikestrongCooked together938 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
Potato + tomatotop 5% of all pairsSmell alikestrongCooked together2,798 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
- Potatoes
- Break down while boiling to thicken the soup and give it body.
- Tomatoes
- Add acidity and moisture that give the broth its flavor.
- Onion
- Adds savory aromatic depth as it softens in the broth.
- Butter
- Adds richness and fat that carries flavor and rounds out the broth.
- Sweet cream
- Adds richness and smoothness when stirred in just before serving.
The step that matters
Adding the sweet cream. Cream added to a boiling soup can curdle or separate. Stirring it in just before serving, off the heat, keeps it smooth and evenly blended.
Swap the tomato
How well each one fits the dish's main ingredients (potato, onion, turnip, cabbage, barley, corn, pepper):
- Leekfits better
- Carrotfits better
- Broccolifits better
- Tomatothe original
Fit is the average pairing score against potato, onion, turnip, cabbage, barley, corn, 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 vegetable 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.

Indian Spiced Potato Soup with Tofu and Spinach448 recipes
Cream of Potato Soup38 recipes
Tomato Bisque11 recipes
Clear Carrot and Bottle Gourd Soup65 recipes