Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Feather Cake
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Cream the butter and sugar together until smooth.
Dissolve the baking soda in the milk and add it to the mixture, beating well.
Sift the flour and cream of tartar together, then add to the mixture.
Beat in the yolks of the eggs.
In a separate bowl, beat the egg whites until stiff, then fold them into the batter.
Add the remaining flour and mix well.
Bake
Grease two medium-sized cake pans and pour in the batter.
Bake in a moderate oven at 350°F (175°C) for 20 minutes to 1 hour.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour 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 whites trap air, giving the cake its light, feathery crumb, while yolks add richness.
- Cream of tartar
- Acidifies the batter and stabilizes the whipped egg whites, helping them hold their volume.
- Baking soda
- Reacts with the acid in the batter to release carbon dioxide, causing the cake to rise.
- Butter
- Creamed with sugar to trap air and add fat for a tender texture and flavor.
- Sugar
- Sweetens the cake and, creamed with butter, helps build a fine, even crumb.
- Flour
- Provides the structure that sets the cake as it bakes.
The step that matters
Folding in the stiff egg whites. Whites must be beaten until stiff but folded in gently, since overmixing deflates the air that gives the cake its light texture.
“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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