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 ↓
Soda Biscuit.
Ingredients
Directions
Make the dough
Sift the cream of tartar with the flour.
Rub in the butter until well combined.
Dissolve the baking soda in the sweet milk or warm water.
Quickly mix the liquid into the flour mixture.
Knead the dough just enough to bring it together.
Bake
Prepare for the oven and bake immediately.
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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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 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
- Flour
- Provides the starch and gluten network that gives the biscuit its structure.
- Cream of tartar
- Acts as an acid that reacts with baking soda to produce gas for rising.
- Baking soda
- Reacts with the acid in the dough to release carbon dioxide, lifting the biscuit.
- Butter
- Adds fat that coats flour particles, giving a tender, crumbly texture.
- Sweet milk
- Supplies moisture to hydrate the flour and dissolve the baking soda.
The step that matters
Quickly mix the liquid into the flour mixture. Baking soda and cream of tartar start producing carbon dioxide as soon as they get wet. Mixing quickly and baking immediately keeps that gas in the dough. Overworking the dough develops gluten, which makes the biscuit tough.
“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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