Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Beef Soup
Ingredients
Directions
Prepare the stock
Boil the soup bone the day before you want to serve the soup to prepare the stock.
Skim the grease off the stock the next day and melt the butter.
Make and serve the soup
Add spices, Worcestershire sauce, butter, and brown flour to the stock.
Stir in the vermicelli and grated carrot.
Mash the hard-boiled eggs smooth and place them in a serving dish.
Pour the soup over the mashed eggs.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + carrottop 13% of all pairsSmell alikemoderateCooked together8,029 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sauce + buttertop 15% of all pairsSmell alikelowCooked together15,338 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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
- Soup bone
- Simmers into the stock that forms the flavor base of the soup.
- Butter
- Adds richness and a rounded, savory flavor to the broth.
- Brown flour
- Thickens the broth slightly as it cooks with the butter.
- Vermicelli
- Adds starch that softens in the broth and gives it body and texture.
- Carrot
- Adds mild sweetness and color to the soup.
- Hard-boiled eggs
- Mashed into the serving dish, they add soft body and richness beneath the soup.
The step that matters
Skim the grease off the stock the next day. Fat from the bones rises and sets on chilled stock, so it can be lifted off cleanly. Removing it before reheating keeps the soup from tasting greasy and gives it a clearer broth.
Swap the carrot
How well each one fits the dish's main ingredients (sauce, butter, flour, egg):
- Shallotfits better
- Chivefits better
- Asparagusfits better
- Carrotthe original
Fit is the average pairing score against sauce, butter, flour, egg. 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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