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Dessert

Potato Custard

A baked custard made with mashed potatoes, butter, sugar, eggs, nutmeg, and a pie crust.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Potato and nutmeg are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 1,052 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Potato Custard

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. Peel and boil the potatoes until tender.

  2. Mash the potatoes and mix with butter, sugar, eggs, and grated nutmeg.

  3. Pour the mixture into a prepared pie crust.

Bake and serve

  1. Bake at 350°F (175°C) until set and golden.

  2. Let cool before serving.

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 + nutmegtop 8% of all pairs
    Smell alikemoderate
    Cooked together1,052 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

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

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

  3. Butter + nutmegtop 16% of all pairs
    Smell alikemoderate
    Cooked together24,377 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

    Shared aroma: decanal (soap, orange peel).

  5. Egg + nutmegtop 17% of all pairs
    Smell alikelow
    Cooked together24,744 recipes

    Shared aroma: acetic acid (sour, vinegar).

Egg and nutmeg barely smell alike, yet cooks put them together in 24,744 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
Mashed to form the body and bulk of the custard filling.
Butter
Adds fat for richness and a smooth, tender texture.
Sugar
Adds sweetness and helps the filling brown during baking.
Eggs
Set during baking to bind the filling into a sliceable custard.
Nutmeg
Contributes a warm, aromatic spice flavor.

The step that matters

Bake until set. Eggs set as they heat, so underbaking leaves the filling runny, while overbaking can make it curdle or weep. Watch for a firm center and golden edges, then let it cool so the custard finishes setting.

Swap the potato

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

  1. Sweet potatofits better
  2. Leekfits better
  3. Chivefits about as well
  4. Potatothe original

Fit is the average pairing score against butter, sugar, egg, nutmeg. 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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