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 ↓
German Pound Cake
Ingredients
Directions
The book says “a moderately hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Grease and line a cake tin.
Make the batter
Cream the butter and sugar with the lemon rind until light and fluffy.
Beat in the eggs one at a time.
Add the cleaned sultanas and shredded candied peel.
Sift the flour and gently fold it into the mixture.
Bake
Bake for about 2 hours, starting in a 400°F (200°C) oven, then reduce to 300°F (150°C) after the first hour.
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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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 + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, 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
- Butter
- Creamed with sugar to trap air, giving the cake a light, tender crumb and rich flavour.
- Eggs
- Bind the batter and add structure and richness as the cake sets in the oven.
- All-purpose flour
- Provides the main structure that sets as the cake bakes.
- Castor sugar
- Sweetens the cake and, creamed with butter, helps hold air for a light texture.
- Sultanas
- Add moisture and chewy sweetness throughout the cake.
The step that matters
Fold in the flour gently. Overmixing once flour is added develops gluten, which can toughen the cake and make it dense. Folding keeps the air trapped in the creamed butter and eggs, so the crumb stays light.
Swap the lemon
How well each one fits the dish's main ingredients (flour, butter, egg, sugar):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Lemonthe original
Fit is the average pairing score against flour, butter, egg, sugar. 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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