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 Sandwiches
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Cream the Cottolene and sugar in a bowl.
Beat in the eggs one at a time.
Gently mix in the flour and baking powder.
Divide the mixture into well-greased shallow tins and level the tops.
Bake and assemble
Bake in a moderate oven at 350°F (175°C) until golden.
Once cooled, split the cakes in half with a sharp knife.
Spread raspberry jam on the bottom half and place the top back on.
Dust with fine sugar and serve.
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.
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Sugar + buttertop 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
- Cottolene
- Provides fat that makes the cakes tender and moist.
- Sugar
- Sweetens the cake and helps create a light, tender crumb when creamed.
- Eggs
- Add structure and richness, helping the batter bind and rise.
- Flour
- Forms the structure that holds the cake together as it bakes.
- Baking powder
- Produces gas that lifts the batter so the cakes rise.
The step that matters
Gently mix in the flour and baking powder. Overmixing once flour is added develops gluten, making the cakes tough and dense instead of tender. Mix only until the flour disappears, and keep the batter light so the baking powder can lift it.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 recipes