Why it works: Flour and raisin match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,075 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Frosted Raisin Cake
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare and mix
Preheat the oven to 350°F (175°C).
In a bowl, mix sugar, flour, eggs, cold water, baking powder, and butter until smooth.
Divide the batter into layers.
Bake and make the frosting
Bake until golden.
Beat the egg white until stiff.
Combine ⅔ cup sugar and 1 tablespoon water in a saucepan.
Cook over boiling water for 10‑15 minutes without letting it get stiff.
Stir in the chopped raisins into the frosting.
Assemble
Spread the frosting between the layers and on top of the cake.
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 + raisintop 1% of all pairsSmell alikestrongCooked together9,075 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + walnuttop 12% of all pairsSmell alikemoderateCooked together5,873 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Walnut + raisintop 13% of all pairsSmell alikemoderateCooked together647 recipes
Shared aroma: 1-octen-3-ol (mushroom, earthy).
-
Sugar + raisintop 13% of all pairsSmell alikemoderateCooked together12,481 recipes
Shared aroma: beta-damascenone (apple, rose).
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
- Eggs
- Provide structure and richness to the batter as they set during baking.
- Flour
- Forms the structure of the cake crumb as its proteins set with heat.
- Sugar
- Sweetens the cake and helps it brown while baking.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Butter
- Adds fat for tenderness and flavour in the crumb.
- Egg white
- Whipped to stiffness to give the frosting its light, airy texture.
The step that matters
Cooking the frosting without letting it get stiff. Sugar syrup boiled too long becomes thick and hard as water evaporates and sugar concentrates, so the frosting can set too firmly to spread. Watching the time keeps it soft and spreadable.
Swap the walnut
How well each one fits the dish's main ingredients (sugar, flour, egg, butter, raisin):
- Almondfits better
- Chestnutfits better
- Pistachiofits better
- Walnutthe original
Fit is the average pairing score against sugar, flour, egg, butter, raisin. 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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