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 ↓
Shrewsbury Cakes
Ingredients
Directions
Make the dough
In a bowl, beat together the butter and castor sugar until creamy.
Add the egg and grated lemon rind, and mix well.
Gradually stir in the flour until smooth, avoiding lumps.
Shape the cakes
Flour a surface and turn the dough out onto it.
Roll out the dough as thin as possible using a rolling pin.
Dip a cutter or wine glass in flour and cut the dough into shapes.
Bake
Grease a baking tin with butter and place the cakes on it.
Bake in a preheated oven at 400°F (200°C) for about 20 minutes until light brown.
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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Sugar + flourtop 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 + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 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
- Butter
- Creams with the sugar to give the dough richness and a tender crumb.
- Castor sugar
- Creams with the butter and adds sweetness and gentle browning.
- Flour
- Forms the structure of the dough once stirred in.
- Egg
- Binds the dough and adds moisture and richness.
The step that matters
Rolling the dough thin. Thin dough bakes through quickly and turns crisp rather than soft or doughy, so uneven thickness leads to cakes that bake unevenly.
Swap the lemon
How well each one fits the dish's main ingredients (butter, sugar, flour, egg):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Lemonthe original
Fit is the average pairing score against butter, sugar, flour, egg. 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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