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Dessert

Thin Captains or Water Biscuits

A thin biscuit made with flour, butter, eggs, and water, baked until blistered.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Thin Captains or Water Biscuits

Oven, in the book's wordsA very hot oven

Ingredients

Directions

The book says “a very hot oven”. The 400°F in the steps is the modern equivalent, not the book's own figure.

Make the dough

  1. Mix flour, butter, eggs, and water until combined.

  2. Knead the dough until smooth.

Shape and prepare

  1. Roll out the dough very thin, as thin as paper.

  2. Cut out shapes with a cutter and dock them with a docker.

  3. Dust a thin baking sheet with cornmeal or ground rice.

Bake

  1. Place the biscuits on the sheet and bake in a very hot oven (400°F / 200°C).

  2. Tilt the sheet towards the hottest part of the oven for a few seconds to create blisters.

  3. Finish baking on the oven bottom until done.

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.

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. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

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 main structure of the dough, giving the biscuits their body once baked.
Butter
Adds fat that tenderizes the dough and contributes to a crisp, short bite.
Eggs
Add protein that binds the dough and helps set its structure during baking.
Water
Hydrates the flour so gluten can form, and turns to steam that helps lift the thin dough.

The step that matters

Rolling the dough very thin. Thin dough has little water to hold, so it dries and crisps in the hot oven instead of turning soft or cakey. Uneven thickness leads to uneven baking, so keep the sheet consistent throughout.

“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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