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Dessert

Soda Biscuits

Soda biscuits are a quick, lightly sweetened baked snack made with butter, flour, sugar, eggs, baking soda, and hot milk.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Soda Biscuits

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 Biscuits

Oven, in the book's wordsA quick oven

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

  1. Preheat your oven to 400°F (200°C).

  2. Rub the butter into the flour in a large bowl.

  3. Add the salt and powdered sugar, and mix well.

  4. Whisk the eggs and stir them into the flour mixture.

  5. Dissolve the baking soda in the hot milk and add it to the mixture.

  6. Beat the mixture until smooth and light.

Shape and bake

  1. Roll out the pastry to ½ inch thick and stamp into shapes.

  2. Bake immediately in the preheated oven for 12 to 20 minutes until golden.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  5. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 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

Butter
Rubbed into the flour to add richness and a tender, crumbly texture.
Flour
Forms the main structure of the biscuits once mixed with the eggs and liquid.
Eggs
Add structure and richness, binding the dough and helping it set when baked.
Baking soda
Reacts with the hot milk to release gas, helping the biscuits rise and lighten.
Powdered sugar
Adds sweetness and fine texture, and helps the biscuits brown lightly.

The step that matters

Bake immediately after shaping. Baking soda starts releasing gas as soon as it is dissolved in the hot milk. If the shaped biscuits wait, much of that lift is lost, so they rise less and bake 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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