Why it works: Butter and flour 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 ↓
Nut Jumbles
Ingredients
Directions
The book says “a rather hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
Preheat the oven to 400°F (200°C).
In a bowl, rub together the butter and sugar until well combined.
Beat in the eggs one at a time until thoroughly mixed.
Sift together the flour, cornstarch, and baking powder, then add to the mixture.
Stir in the lemon extract and mix until a fine dough forms.
Shape and bake
Roll the dough out on a floured surface to a thin layer.
Spread the chopped peanuts mixed with granulated sugar over the dough.
Cut into shapes with a biscuit cutter.
Place on a greased baking sheet and bake for 8 to 10 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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Butter + flourtop 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 + peanuttop 15% of all pairsSmell alikemoderateCooked together1,427 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + peanuttop 16% of all pairsSmell alikemoderateCooked together1,754 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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
- Butter
- Creams with sugar to add richness and a tender, short texture.
- Eggs
- Bind the dough and add structure and moisture to the cookies.
- Flour
- Provides the main structure that holds the cut shapes together.
- Cornstarch
- Softens the flour's gluten, giving the cookies a lighter, more delicate crumb.
- Baking powder
- Releases gas in the oven so the cookies rise slightly and lighten.
- Sugar
- Sweetens the dough and helps it brown during baking.
The step that matters
Rolling the dough to a thin, even layer. Thickness controls how the cookies bake. Uneven dough bakes unevenly, so thin spots over-brown or burn while thick spots stay soft. Even thickness gives cookies that bake at the same rate.
Swap the peanut
How well each one fits the dish's main ingredients (butter, sugar, egg, flour, lemon):
- Almondfits better
- Pistachiofits better
- Milletfits better
- Peanutthe original
Fit is the average pairing score against butter, sugar, egg, flour, lemon. 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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