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 ↓
Angel Cake
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Preheat the oven to 300°F (150°C).
Beat the egg whites until stiff peaks form.
Gradually add the powdered sugar while continuing to beat.
Sift the flour four times, adding the cream of tartar during the last sift.
Gently fold the flour mixture into the egg mixture along with the bitter almond extract and salt.
Bake and cool
Pour the batter into a chimney mold without greasing it.
Bake for 40 to 60 minutes.
Once baked, turn the mold upside down in a colander to cool.
Gently coax the cake out of the mold.
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.
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Flour + almondtop 5% of all pairsSmell alikemoderateCooked together8,673 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Cream + almondtop 16% of all pairsSmell alikemoderateCooked together5,130 recipes
Shared aroma: 2-heptanol (bitter, floral).
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
- Egg whites
- Whipped into stiff peaks to trap air, giving the cake its light, airy structure.
- Powdered sugar
- Stabilizes the whipped whites and adds sweetness while keeping the foam fine and smooth.
- All-purpose flour
- Provides light structure that sets the cake's crumb once the batter bakes.
- Cream of tartar
- Acidifies the egg whites, helping them whip to a more stable, voluminous foam.
The step that matters
Folding the flour mixture into the egg mixture. Folding gently keeps the air bubbles in the whipped whites intact. Stirring or deflating the batter causes it to lose volume and produce a denser cake.
“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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