Why it works: Flour and nuts are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 1,180 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Hickory-nut Kisses
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 dough
Beat the egg and sugar together until very light.
Add the flour and chopped nuts, mixing well.
Bake
Drop the mixture by teaspoonfuls onto a baking pan, spacing them 1½ inches apart.
Bake in a slow oven at 300°F (150°C) for about twenty minutes.
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 + nutstop 13% of all pairsSmell alikemoderateCooked together1,180 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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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + sugartop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + nutstop 25% of all pairsSmell alikelowCooked together2,228 recipes
Shared aroma: 1-penten-3-one (fish, pungent).
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
- Binds the mixture and adds structure as it sets in the oven.
- Sugar
- Sweetens the cookies and, beaten with the egg, helps create a light texture.
- Flour
- Provides the structure that holds the cookies together as they bake.
- Nuts
- Add flavour, fat and body to the dough.
The step that matters
Beat the egg and sugar until very light. Beating incorporates air into the egg and sugar, which gives the cookies lightness. Under-beaten batter bakes up denser and flatter than intended.
Swap the nuts
How well each one fits the dish's main ingredients (egg, sugar, flour):
- Almondfits better
- Chestnutfits better
- Milletfits better
- Nutsthe original
Fit is the average pairing score against egg, sugar, flour. Candidates are from the same food group and used in at least 100 recipes.
“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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