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 Food Cake
Ingredients
Directions
The book says “a very slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Sift the flour four times and the sugar once; measure and combine.
Beat the egg whites until frothy, then add the cream of tartar and continue beating until stiff peaks form.
Gently fold in the sifted flour and sugar mixture, then add the almond flavoring.
Bake
Pour the batter into an ungreased Van Dusen pan.
Bake in a 300°F (150°C) oven for 1 hour, placing a pie pan of water on the lower rack.
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 + 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 foam, they trap air and provide the cake's light, airy structure.
- Sugar
- Sweetens the cake and helps stabilize the whipped whites, giving a fine, tender crumb.
- Pastry flour
- Provides low-protein structure that holds the airy foam without making the cake tough.
- Cream of tartar
- Acidifies the whites, stabilizing the foam so it holds stiff peaks during baking.
The step that matters
Folding in the flour and sugar. Overmixing or stirring vigorously knocks air out of the whipped whites, so the cake will bake up dense and flat. Fold gently, just until no dry streaks remain.
“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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