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
Turn the dough onto a floured surface and roll it out.
Cut the dough into small circular cakes.
Bake in a preheated 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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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
- Forms the structure of the biscuit as its main dry base.
- Cream of tartar
- Acts as an acid that reacts with baking soda to produce rising gas.
- Baking soda
- Releases carbon dioxide when combined with the acid, leavening the biscuit.
- Milk
- Adds moisture to hydrate the flour and form a soft dough.
The step that matters
Quickly stir the milk mixture into the flour mixture.. Baking soda and cream of tartar begin reacting as soon as they meet liquid, releasing gas that lifts the dough. Delaying the mixing lets much of that gas escape before baking, which leaves the biscuits flatter and denser.
“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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