Why it works: Ketchup and sauce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,099 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Mushroom Sauce
Ingredients
Directions
In a saucepan, melt the butter over medium heat.
Stir in the flour and cook until smooth and light brown.
Add the liquid from the can of mushrooms and season with salt.
Stir in the tomato ketchup and Worcestershire sauce.
Add the halved mushrooms, cover, and simmer for 15 minutes, stirring often.
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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Ketchup + saucetop 1% of all pairsSmell alikestrongCooked together1,099 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Mushroom + tomatotop 7% of all pairsSmell alikemoderateCooked together2,719 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + ketchuptop 13% of all pairsSmell alikemoderateCooked together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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
- Flour
- Thickens the sauce as it cooks with the butter and liquid.
- Butter
- Carries flavour and forms the roux base with the flour.
- Mushrooms
- Provide the main earthy flavour and body of the sauce.
- Tomato ketchup
- Adds sweetness and acidity to round out the savoury sauce.
The step that matters
Cooking the flour in the butter. Cooking the flour until smooth and light brown removes its raw starchy taste and lets it thicken evenly. Stirring constantly prevents lumps and scorching.
Swap the tomato
How well each one fits the dish's main ingredients (butter, flour, mushroom, ketchup, sauce):
- Shallotfits better
- Chivefits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against butter, flour, mushroom, ketchup, sauce. 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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