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 ↓
Cookies, No. 2
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
In a bowl, mix sugar, lard or butter, sour milk, and baking soda.
Add enough flour to form a dough that can be rolled out.
Incorporate any flavoring you wish.
Optionally, add grated or prepared coconut.
Shape and bake
Roll out the dough and cut into desired shapes.
Bake in a quick oven at 400°F (200°C) until 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.
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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Milk + coconuttop 10% of all pairsSmell alikemoderateCooked together2,648 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + coconuttop 12% of all pairsSmell alikemoderateCooked together3,467 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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
- Sugar
- Adds sweetness and helps the cookies brown during baking.
- Lard or butter
- Provides fat that gives the cookies tenderness and richness.
- Sour milk
- Adds acidity and moisture to the dough.
- Baking soda
- Reacts with the acid in the sour milk to lift and lighten the cookies.
- Flour
- Provides structure so the dough can be rolled and cut.
The step that matters
Bake in a quick oven until golden. Baking soda reacts with the sour milk as soon as the dough is mixed, so the dough should be shaped and baked promptly to keep its rising power. Browning depends on oven heat and timing, so cookies pulled too early stay pale and doughy, while those left too long turn dry and dark.
Swap the coconut
The recipe marks coconut as optional. How well each one fits the dish's main ingredients (sugar, butter, milk, flour):
- Vanillafits better
- Raisinfits better
- Figfits about as well
- Coconutthe original
Fit is the average pairing score against sugar, butter, milk, 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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