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 ↓
Sugar Biscuits
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.
Make the batter
Beat together the sugar, flour, whole eggs, and egg yolks for 30 minutes.
Shape and bake
Drop spoonfuls of the mixture onto a greased baking sheet lined with parchment paper.
Sprinkle the biscuits generously with fine sifted sugar.
Bake in a slow oven at 300°F (150°C) until lightly golden.
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 + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 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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Egg + buttertop 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
- Sugar
- Sweetens the batter and, when beaten with the eggs, helps trap air for a lighter texture.
- Flour
- Provides the structure that holds the biscuits together as they set in the oven.
- Eggs
- Add structure and, when beaten, incorporate air that gives the biscuits lift.
- Egg yolks
- Add richness and fat, giving a tender crumb and helping the biscuits brown.
The step that matters
Beat the mixture for the full 30 minutes. Long beating of the eggs and sugar incorporates air into the batter. That trapped air gives the biscuits their lift and light texture, so a shorter beating time often leads to dense, flat biscuits.
“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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