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Cup Custard

A baked custard made with milk, eggs, sugar, nutmeg, and butter, served in individual cups.

From an old cookbook · modernised transcription
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Cup Custard

Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Cup Custard

Oven, in the book's wordsA slow oven

Ingredients

Directions

The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Make the custard

  1. Heat the milk in a saucepan until warm.

  2. In a bowl, beat the eggs until light and fluffy.

  3. Add the sugar and nutmeg to the milk.

  4. Mix in the beaten eggs.

  5. Pour the mixture into cups and place them in a baking pan filled with hot water.

  6. Bake in a slow oven at 300°F (150°C) until set.

Make the second custard

  1. For the second custard, combine the eggs, salt, sugar, flour, and butter in a bowl.

  2. Beat the mixture until light and creamy.

  3. Add nutmeg or flavoring and milk as desired.

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.

Photo for illustrative purposes only · Contact us to use it

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  2. Nutmeg + flourtop 8% of all pairs
    Smell alikemoderate
    Cooked together18,623 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

Flour and butter 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

Eggs
Coagulate as they heat, giving the custard its set structure.
Milk
Forms the liquid base that the eggs set into a tender custard.
Sugar
Adds sweetness and softens the set texture slightly.
Flour
Thickens the mixture and adds body to the second custard.
Butter
Adds fat for richness and a smoother mouthfeel.

The step that matters

Bake in a slow oven in a water bath until set. Egg proteins set gradually as they heat. Baking slowly in hot water moderates the heat around the cups. Overbaking pushes the eggs past their setting point, causing curdling, weeping, or a grainy texture.

Swap the nutmeg

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

  1. Cinnamonfits better
  2. Nutmegthe original
  3. Jalapenofits less well
  4. Capersfits less well

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