Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Puree of String-beans
Ingredients
Directions
Make the stock
Add the knuckle of veal, water, salt pork, and onion to a pot and simmer for 5 hours to make a strong stock.
Strain the stock through a sieve into a jar.
Refrigerate the stock overnight to remove fat.
Make the puree
Melt the butter over medium heat in a saucepan.
When the butter bubbles, add the flour and cook without browning.
Gradually stir in the hot cream and heated stock, then add the string-bean pulp.
Mix well without boiling.
Stir constantly while heating until hot.
Serve
Serve topped with fried fritter-beans or croutons.
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.
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Pork + oniontop 10% of all pairsSmell alikemoderateCooked together18,214 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Veal + porktop 11% of all pairsSmell alikemoderateCooked together4,930 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pork + buttertop 13% of all pairsSmell alikemoderateCooked together13,933 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
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
- Butter
- Enriches the sauce with fat and flavour, and its melt starts the roux.
- Flour
- Cooked in the butter, it thickens the puree into a smooth, body-rich texture.
- Hot cream
- Adds richness and a silky mouthfeel to the thickened puree.
- String-bean pulp
- Provides the main green flavour and body of the puree.
- Veal knuckle stock
- Supplies savoury depth and liquid that carries the puree.
The step that matters
Stir constantly without boiling. Flour thickens liquid only when it is stirred smoothly as it heats; stirring prevents lumps, and avoiding a boil keeps the cream from curdling or the starch from breaking down into a thin, grainy texture.
Swap the onion
How well each one fits the dish's main ingredients (veal, pork, butter, flour, cream):
- Potatofits better
- Leekfits about as well
- Onionthe original
- Chivefits about as well
Fit is the average pairing score against veal, pork, butter, flour, 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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