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 ↓
Raspberry Sandwich
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Cream together the sugar and butter until smooth.
Add the eggs and ground rice, mixing well.
Stir in the flour until fully combined.
Assemble and bake
Spread half of the mixture onto buttered parchment paper in a shallow dish.
Layer raspberry preserve over the mixture.
Cover with the remaining mixture.
Bake at 400°F (200°C) until golden.
Finish
Once cooled, cut into thick pieces like sandwiches and dust with sugar.
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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Rice + raspberrytop 15% of all pairsSmell alikemoderateCooked together201 recipes
Shared aroma: 2-methoxy-4-vinylphenol (clove, smoky).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + ricetop 16% of all pairsSmell alikemoderateCooked together9,645 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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 cake a tender, rich texture and flavor.
- Eggs
- Bind the batter and add structure as they set in the oven.
- Flour
- Provides the main structure that holds the sponge together once baked.
- Ground rice
- Adds a fine, slightly crumbly texture to the crumb.
- Raspberry preserve
- Adds sweetness, fruity acidity and moisture to the layer inside.
The step that matters
Creaming the sugar and butter until smooth. Beating sugar into butter traps air in the fat, which helps the batter rise and gives a light, even crumb. Under-creamed butter leaves a dense cake.
Swap the raspberry
How well each one fits the dish's main ingredients (sugar, butter, egg, rice, flour):
- Raisinfits better
- Vanillafits better
- Coconutfits better
- Raspberrythe original
Fit is the average pairing score against sugar, butter, egg, rice, flour. 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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