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Mashed Potatoes

A creamy potato dish made with butter, eggs, milk, and optional seasonings.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Mashed Potatoes

Ingredients

Directions

Prepare the potatoes

  1. Boil the potatoes until tender, then peel and mash them smoothly.

  2. In a large bowl, mix the mashed potatoes with butter, beaten eggs, milk, and salt until well combined.

Shape and brown

  1. Heap the mixture onto a serving dish, using a spoon to create a rough texture.

  2. Brush the top lightly with melted butter.

  3. Place in a Dutch oven and brown gradually for about 1 hour.

Variations

  1. For a plain version, mix in butter, milk, and salt without browning.

  2. For added flavor, heat the potatoes with white pepper and minced onion before serving hot.

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 + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

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

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

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

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

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

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

  5. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

What each ingredient does

Potatoes
Provide the starchy bulk that gives the mash its body and soft texture.
Butter
Adds richness and fat, giving a smooth mouthfeel and helping the top brown.
Eggs
Bind the mixture so it holds its shape when heaped and baked.
Milk
Adds moisture and creaminess, loosening the mash for a smooth texture.

The step that matters

Browning the top gradually. Browning relies on the Maillard reaction, which needs dry surface heat. Browning too fast or at too high a heat can scorch the outside before the centre is set and heated through.

Swap the white pepper

The recipe marks white pepper as optional. How well each one fits the dish's main ingredients (potato, butter, egg, milk, onion):

  1. Parsleyfits better
  2. Garlicfits better
  3. Nutmegfits better
  4. White pepperthe original

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