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To Mash Potatoes

A creamy mashed potato dish with butter, cream, salt, and egg yolk, baked until browned.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Butter and cream are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

To Mash Potatoes

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

  1. Peel and wash the potatoes.

  2. Place them in a pot, cover with cold water, and add 1 teaspoon of salt.

  3. Boil for 30 minutes or until tender.

Mash and season

  1. Drain the water and mash the potatoes until smooth.

  2. Mix in the butter, cream, and additional salt until well combined.

  3. Transfer the mash to a dish and smooth the top with a knife.

Bake and serve

  1. Spread the egg yolk over the top and bake in a 400°F (200°C) oven until browned.

  2. Serve 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. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

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

  3. Potato + creamtop 17% of all pairs
    Smell alikelow
    Cooked together2,481 recipes

    Shared aroma: 1-octen-3-one (mushroom, metallic).

  4. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Cream + eggtop 24% of all pairs
    Smell alikelow
    Cooked together42,166 recipes

    Shared aroma: acetic acid (sour, vinegar).

Cream and egg barely smell alike, yet cooks put them together in 42,166 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
Provide the starchy base that mashes into a smooth, soft body.
Butter
Adds fat for richness and a smooth, silky mouthfeel.
Cream
Adds moisture and richness, making the mash softer and creamier.
Egg yolk
Promotes browning on the surface during baking and adds richness.

The step that matters

Boil the potatoes until tender. Potatoes that are undercooked stay firm and lumpy when mashed, while thorough cooking lets the starch soften so the mash turns smooth. Draining well before mashing also keeps the texture from becoming watery.

Swap the potato

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

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

Fit is the average pairing score against butter, cream, 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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