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Potato Crust

A crust made from mashed potatoes, egg, butter, milk, and salt, used to cover meat stew or pie before baking.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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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 ↓

Potato Crust

Ingredients

Directions

Make the dough

  1. In a bowl, combine mashed potatoes, egg, butter, milk, and salt. Mix until smooth.

  2. Gradually add flour until the mixture is soft enough to roll out, about ½ inch thick.

Assemble

  1. Use the crust to cover meat stew or pie before baking.

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

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

  2. Potato + milktop 9% of all pairs
    Smell alikemoderate
    Cooked together3,611 recipes

    Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

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

  5. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 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

Mashed potatoes
Provide the bulk and moisture that give the crust its soft, tender body.
Egg
Binds the mixture together and adds structure as the crust sets.
Butter
Adds fat for richness and a tender texture.
Milk
Adds moisture and softness to the dough.
Flour
Gives the dough enough structure to be rolled out and hold its shape.

The step that matters

Adding the flour gradually. Adding too much flour at once can make the dough stiff and dense. Adding it slowly lets you stop once the dough is soft enough to roll without becoming tough.

Swap the potato

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

  1. Chivefits about as well
  2. Potatothe original
  3. Leekfits about as well
  4. Asparagusfits about as well

Fit is the average pairing score against egg, butter, milk, flour. 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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