Why it works: Egg and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 106,462 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
A Good Sponge Cake
Ingredients
Directions
Prepare
Rasp the rind of a fine lemon on lumps of well-refined sugar.
Scrape off the part that has imbibed the essence, or crush the sugar lumps to powder, and add them to as much more as will make up the weight of eight or ten fresh eggs in the shell.
Break the eggs one by one and separate the whites from the yolks.
Make the batter
Beat the yolks in a large bowl for ten minutes, then gradually add the sugar and beat them well together.
Whisk the whites to a quite solid froth.
Add the frothy whites to the yolks and blend well.
Sift and stir the flour gently into the mixture, but do not beat it into the mixture.
Bake
Pour the batter into a well-buttered mould.
Bake for an hour and a quarter in a moderate oven.
Nutrition, whole recipe (rough)
What these numbers assume: 3 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Eggs | 1 large egg (50g) | 78 |
| Lemon | juice of 1 lemon (48ml) | 12 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
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. See the original page.
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.
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Lemon + flourtop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Egg + lemontop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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 whites trap air and yolks add richness, giving the cake its light, set structure.
- Flour
- Provides the starch that sets during baking to give the cake its structure.
- Sugar (in the method)
- Sweetens the cake and helps the yolks hold a stable, aerated foam.
- Lemon
- Its rind adds aroma and flavour to the sugar, which is then mixed into the batter.
The step that matters
Folding in the flour gently. Beating the flour into the batter develops gluten and knocks out the air trapped in the whisked whites, leaving a dense, flat cake.
Swap the lemon
How well each one fits the dish's main ingredients (egg, flour):
- Raisinfits better
- Vanillafits about as well
- Lemonthe original
- Blueberryfits about as well
Fit is the average pairing score against 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.
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