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Potato Crust

A crust made from mashed potatoes, egg, butter, milk, and flour, baked over stew.

From an old cookbook · modernised transcription
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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

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Preheat the oven to 350°F (175°C).

  2. In a bowl, combine mashed potatoes, egg, butter, milk, and salt. Beat until smooth.

Make the dough

  1. Gradually work in enough flour to form a dough that can be rolled out.

  2. Roll out the dough to ½ inch thick.

Bake

  1. Add the crust to the meat stew when the meat is tender and bake for 1 hour.

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
Adds moisture and softness, so the dough is tender and easy to handle.
Egg
Binds the mixture and helps give the crust structure as it sets.
Butter
Adds fat, which gives the crust richness and a tender texture.
Milk
Adds moisture and helps the dough come together smoothly.
Flour
Forms the gluten network that gives the rolled dough its structure.

The step that matters

Gradually work in enough flour. Adding flour a little at a time lets you stop once the dough is rollable. Too much flour dries the dough and makes the crust tough and crumbly.

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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