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Dessert

Potato Pastry

A dough made from sifted flour, mashed potatoes, butter, salt, and ice water, used for meat pies.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Potato Pastry

Ingredients

Directions

Prepare

  1. Press the potatoes through a colander.

  2. In a bowl, combine the flour, butter, and salt.

Make the dough

  1. Mix in the mashed potatoes and add enough ice water to form a stiff paste.

  2. Roll out the dough and use it for plain meat pies or other dishes.

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. Potato + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together6,456 recipes

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

  3. Flour + potatotop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 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
Forms the structure of the dough once combined with water.
Butter
Adds fat that keeps the pastry tender and short.
Mashed potato
Adds moisture and body to the dough.
Ice water
Hydrates the flour so the dough holds together as a stiff paste.

The step that matters

Adding the ice water. Too much water makes the dough sticky and tough, while too little leaves it crumbly and hard to roll. Cold water keeps the butter firm, which helps the pastry stay flaky and tender.

Swap the potato

How well each one fits the dish's main ingredients (flour, butter):

  1. Shallotfits better
  2. Leekfits better
  3. Arrowrootfits better
  4. Potatothe original

Fit is the average pairing score against flour, butter. Candidates are from the same food group and used in at least 100 recipes.

“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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