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Potato Border

A dish of cooked potato mashed with egg yolk, butter, salt, and pepper, formed into a ball.

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

Prepare the potato

  1. Rub the potato through a wire sieve.

  2. Melt the butter in a saucepan.

  3. Add the potato and stir in the yolk of the egg.

Season and cook

  1. Season well with salt and pepper.

  2. Stir over the fire until the mixture forms a ball.

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

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

  3. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  5. Potato + eggtop 29% of all pairs
    Smell alikemoderate
    Cooked together4,978 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Potato
Forms the bulk and body of the mixture, giving it structure once it is firmed by stirring.
Egg yolk
Binds the potato and adds richness and smoothness to the mixture.
Butter
Adds fat for richness and a smooth, moist texture.

The step that matters

Stir over the fire until the mixture forms a ball. The mixture must dry out enough to hold its shape. Keep the heat moderate and stir constantly, since high heat can scorch the butter and scramble the yolk.

Swap the potato

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

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

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