Why it works: Flour and butter 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 ↓
Sauce for Mutton
Ingredients
Directions
Prepare the gravy
Skim the broth from boiled mutton.
Beat the eggs and stir them into the gravy with the flour.
Thicken and finish
Heat on the stove until thick.
Add the butter and mix well.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mutton + buttertop 16% of all pairsSmell alikemoderateCooked together3,781 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Mutton + eggtop 26% of all pairsSmell alikemoderateCooked together1,648 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and butter 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
- Mutton broth
- Forms the liquid base of the sauce and carries its meaty flavour.
- Eggs
- Their proteins set when heated, giving the sauce body and thickness.
- Flour
- Starch swells in hot liquid, helping the sauce thicken and hold together.
- Butter
- Adds fat for richness, smooth texture and a glossy finish.
The step that matters
Heat on the stove until thick.. Egg proteins thicken the sauce only over gentle heat. If it gets too hot or boils hard, the eggs can curdle into lumps, so keep the heat moderate and stir constantly.
“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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