Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Soda 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.
Mix the dough
In a large bowl, mix the flour, cream of tartar, and salt.
In a separate bowl, dissolve the baking soda in the milk.
Quickly stir the milk mixture into the flour mixture.
Shape and bake
Pour the dough onto a floured surface and roll it out.
Cut the dough into small circular cakes.
Bake in a 400°F (200°C) oven 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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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Cream + milktop 18% of all pairsSmell alikemoderateCooked together29,399 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Flour + creamtop 20% of all pairsSmell alikemoderateCooked together30,481 recipes
Shared aroma: acetaldehyde (pungent, ethereal).
Flour and milk barely smell alike, yet cooks put them together in 78,219 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 structure that holds the biscuit's shape as it bakes.
- Cream of tartar
- An acid that reacts with the baking soda to produce rising gas.
- Baking soda
- Releases carbon dioxide when it meets the acid and liquid, lifting the dough.
- Milk
- Hydrates the flour to form dough and carries the baking soda through the mix.
The step that matters
Quickly stir the milk mixture into the flour mixture. Baking soda and cream of tartar start producing carbon dioxide as soon as they are wet. If the dough waits before it goes into the oven, the lift weakens, so the biscuits bake up flatter.
“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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