Why it works: Flour and almond are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 8,673 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Almond Sponge 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
Sift the flour into a bowl.
Blanch the sweet and bitter almonds in scalding water, then remove the skins. Wash the almonds in cold water and dry them.
Pound the almonds into a fine paste, adding water or egg white to prevent boiling.
Make the batter
Beat the egg whites and yolks separately until smooth and thick.
Gradually mix in the powdered sugar and pounded almonds with the eggs.
Gently fold in the flour and baking powder.
Grease a deep square pan and pour the mixture into it.
Bake and finish
Bake in a 350°F (175°C) oven until risen and thoroughly done.
Once cool, cover with icing flavored with rose-water or almond icing.
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.
-
Flour + almondtop 5% of all pairsSmell alikemoderateCooked together8,673 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Almond + buttertop 11% of all pairsSmell alikemoderateCooked together9,245 recipes
Shared aroma: 2,3-pentanedione (butter, sweet).
-
Almond + rosetop 11% of all pairsSmell alikelowCooked together1,465 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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
- Whipped to trap air, giving the cake its light, risen structure.
- Fine flour
- Provides the starch and gluten framework that sets the cake's crumb.
- Powdered sugar
- Sweetens the batter and helps stabilise the whipped eggs.
- Baking powder
- Releases gas in the oven, helping the batter rise.
- Sweet almonds
- Pounded into a paste, adding richness, moisture and nutty flavour.
The step that matters
Folding in the flour and baking powder. Gentle folding keeps the air whipped into the eggs. Overmixing deflates the batter, so the cake bakes up dense instead of light.
“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.

Almond Custard22 recipes
Almond Wafers22 recipes
Coconut Almond Cake17 recipes
Almond Paste Tartlets10 recipes