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 ↓
White Stock Soup
Ingredients
Directions
Make the stock
In a large pot, combine the knuckle of veal and lean bacon.
Add enough water to cover the meat and bring to a boil.
Reduce heat and simmer for several hours until the meat is tender.
Thicken and serve
In a separate bowl, mix the butter and flour to form a paste.
Stir the paste into the stock to thicken it.
Season to taste and serve hot.
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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Veal + buttertop 23% of all pairsSmell alikemoderateCooked together9,381 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Veal + flourtop 28% of all pairsSmell alikelowCooked together5,886 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
- Knuckle of veal
- Long simmering breaks down connective tissue and collagen, giving the stock body and richness.
- Lean bacon
- Adds smoky, savory flavor to the stock as it simmers with the meat.
- Butter
- Combined with flour to form a roux-like paste that carries fat and helps thicken the stock.
- Flour
- Starch that swells in the hot stock, thickening it and giving it a fuller texture.
The step that matters
Stirring the butter and flour paste into the stock. Flour clumps if added dry or too quickly. Mixing it with fat first and whisking it into hot stock spreads the starch evenly so the soup thickens smoothly.
“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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