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 ↓
Sour Milk Biscuit
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.
Prepare the dough
Preheat the oven to 400°F (200°C).
In a large bowl, sift together the flour, baking soda, and salt.
Rub the butter into the flour mixture until it resembles coarse crumbs.
Make a well in the center of the flour mixture.
Dissolve the baking soda in warm water, then fill the cup with sour milk and stir well.
Pour the sour milk mixture into the well and mix to form a soft dough, adding more milk if needed.
Shape and bake
Turn the dough out onto a floured surface, roll it out, and cut with a small cutter.
Bake in the preheated oven until golden brown.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- All-purpose flour
- Forms the structure of the biscuit as it sets in the oven.
- Baking soda
- Reacts with the sour milk to produce gas that helps the biscuits rise.
- Butter
- Rubbed into the flour to add fat, tenderness and flakiness.
- Sour milk
- Provides moisture to bind the dough and its acidity activates the baking soda.
The step that matters
Adding the sour milk to the dough. Too much liquid makes the biscuits tough and dense, while too little leaves dry, crumbly dough. Add the milk gradually until the dough is soft but still holds together, and handle it lightly to keep the biscuits tender.
“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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