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 ↓
Scotch Bread
Ingredients
Directions
The book says “a very slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
In a bowl, rub together the butter and flour until thoroughly mixed.
Add the egg yolk and sugar, then mix and knead until a smooth, stiff dough forms.
Sprinkle a little sugar on a clean surface and shape the dough into a flat, round cake to fit a pie pan.
Bake and serve
Crimp the edges like a pie, cut into sections, and prick with a fork.
Bake in a slow oven at 300°F (150°C) for 1 hour or longer until delicately brown.
Let cool completely before breaking apart.
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 + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Butter
- Coats the flour and adds richness and tenderness to the crumb.
- Flour
- Provides the structure that holds the dough together as it bakes.
- Egg yolk
- Binds the dough and adds richness and colour.
- Sugar
- Sweetens the dough and helps it brown during slow baking.
The step that matters
Bake slowly until only delicately brown. A slow oven dries the dough gradually, producing a crisp, crumbly texture. Higher heat would brown the outside before the centre sets and dries, risking a dense or burnt result.
“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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