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Potato Border

A baked potato pastry border filled with stewed kidneys, fish, or oysters.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Potato and pepper are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 8,305 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Potato Border

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the potato

  1. Peel and boil the potatoes until tender.

  2. Season with a little salt and pass through a wire sieve.

  3. Mix in the butter, salt, and pepper.

Shape and bake

  1. Use a little flour to form the mixture into a border shape.

  2. Beat the egg yolk and glaze the border with it.

  3. Bake at 400°F (200°C) until golden brown.

Serve

  1. Fill the border with stewed kidneys, fish, or stewed oysters.

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. Potato + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together8,305 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

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

  4. Potato + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together5,355 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  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

Potatoes
Form the bulk of the border, and when mashed and sieved, give a smooth, tender body.
Butter
Adds fat and richness, softening the potato mixture and giving it a smooth texture.
Egg yolk
Brushed on as a glaze, it promotes browning and a golden shine on the baked border.

The step that matters

Glazing and baking the border. A beaten egg yolk glaze browns unevenly if applied thickly or pooled. Proteins and sugars in the yolk brown in the oven, so a thin, even coat gives a uniform golden finish.

Swap the potato

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

  1. Chivefits better
  2. Shallotfits better
  3. Asparagusfits better
  4. Potatothe original

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