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 ↓
Spice Cake
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.
Prepare
Preheat the oven to 350°F (175°C) and line a cake tin with thick paper.
Clean the currants and sultanas by rubbing them with a little flour and removing the stalks.
Chop the peel finely and sift the flour with the baking powder.
Make the batter
Cream the butter and sugar until soft.
Add the eggs one at a time, beating well after each addition.
Stir in the fruit and mixed spice, then fold in the flour mixture.
Bake
Pour the batter into the prepared cake tin and bake for about 1.5 hours.
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.
Photo for illustrative purposes only · Contact us to use it
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).
-
Butter + curranttop 17% of all pairsSmell alikemoderateCooked together7,856 recipes
Shared aroma: isoamyl acetate (banana, pear).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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
- Adds fat that gives the cake a tender crumb and rich flavour.
- Eggs
- Provide structure and help bind the batter as they set in the oven.
- Flour
- Forms the main structure of the cake as its proteins set during baking.
- Sugar
- Creams with the butter to trap air and adds sweetness and browning.
- Baking powder
- Releases gas in the batter, helping the cake rise in the oven.
- Currants
- Add moisture and chewy sweetness throughout the cake.
The step that matters
Folding in the flour mixture. Stirring too vigorously after adding flour develops gluten, which makes the cake tough. Fold gently, just until no dry flour shows, so the batter stays light and the cake keeps its texture.
Swap the currant
How well each one fits the dish's main ingredients (butter, sugar, egg, flour):
- Raisinfits better
- Vanillafits better
- Figfits better
- Currantthe original
Fit is the average pairing score against butter, sugar, egg, 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.
More spice cake recipes
You might also like
Red Currant Jelly65 recipes
Currant Ice Cream32 recipes
Currant Sherbet9 recipes
Currant and Raspberry Ice7 recipesThe 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.