Why it works: Flour and butter 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 ↓
A One-egg 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.
Make the batter
Mix the flour and melted butter together.
Add the sugar, well-beaten yolk of the egg, and flavoring.
Beat the egg white to stiff peaks and gently fold it in.
Lastly, add the baking powder, or substitute with ½ teaspoon baking soda and 1 teaspoon cream of tartar.
Bake
Bake in a preheated oven at 350°F (175°C) for 45 to 60 minutes, depending on the oven's heat.
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 + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- All-purpose flour
- Provides the starch and gluten network that gives the cake its structure.
- Granulated sugar
- Sweetens the cake and tenderizes the crumb by interfering with gluten formation.
- Melted butter
- Adds fat for moisture and a tender texture.
- Egg
- The yolk adds richness and emulsifies, while the whipped white traps air for lift and structure.
- Baking powder
- Releases gas when heated, causing the batter to rise.
The step that matters
Gently fold in the beaten egg white. Stiff egg white holds air bubbles that give the cake its lift. Vigorous stirring deflates them, leaving a dense, flat result.
“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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