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 ↓
Boiled Leg of Mutton
Ingredients
Directions
Cook the mutton
Place the mutton in a pot with enough cold water to cover it well and add the salt.
Boil for three hours.
Make the egg sauce
Hard boil the eggs.
Take two eggs and mash them finely with 2 tablespoons of butter.
Take 1 pint of the water used to boil the mutton.
Stir in the flour until smooth.
Pour the mixture over the mashed eggs. Cook for a moment.
Add 1 tablespoon of butter.
Serve
Slice the remaining two eggs thinly.
Lay the sliced eggs over the mutton.
Pour the dressing on top.
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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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).
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
- Mutton
- Long boiling turns the tough leg meat tender and produces the broth used in the sauce.
- Eggs
- Mashed and sliced eggs add richness and body to the dressing and a soft texture to the dish.
- Butter
- Adds fat for richness and a smooth, silky mouthfeel to the dressing.
- Flour
- Starch thickens the mutton broth into a smooth sauce once it is heated.
The step that matters
Stir in the flour until smooth. Flour must be fully dispersed in the liquid before it heats, because unmixed starch clumps and cannot thicken evenly. Stirring the flour into the cooled broth first keeps the dressing smooth.
“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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