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Custard Sauce, for Fruit, Etc

A custard sauce made with eggs, milk, sugar, lemon rind, and optional nutmeg.

From an old cookbook · modernised transcription
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Why it works: Lemon and nutmeg match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 11,318 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

Custard Sauce, for Fruit, Etc

Ingredients

Directions

Make the custard

  1. Boil the milk with the thinly cut lemon rind for a few minutes.

  2. Beat the eggs and sugar together.

  3. Strain the hot milk over the egg mixture.

  4. Return the mixture to the saucepan and stir over low heat until it begins to thicken, being careful not to let it boil.

  5. Remove from heat and stir occasionally until cool.

Finish

  1. Grate a little nutmeg on top if 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.

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. Lemon + nutmegtop 5% of all pairs
    Smell alikestrong
    Cooked together11,318 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  2. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

    Shared aroma: 2-nonenal (fatty, green).

  3. Milk + nutmegtop 15% of all pairs
    Smell alikemoderate
    Cooked together14,685 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

    Shared aroma: acetic acid (sour, vinegar).

  5. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

    Shared aroma: 2-nonenal (fatty, green).

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

Eggs
Egg proteins coagulate as they heat, thickening the milk into a smooth custard.
Milk
Forms the liquid base that the egg proteins set into a pourable sauce.
Sugar
Sweetens the sauce and helps keep the egg mixture smooth when heated.

The step that matters

Return the mixture to the saucepan and stir over low heat. Egg proteins thicken the sauce, but if it boils they can curdle and turn grainy. Low heat and constant stirring let it thicken gently and evenly.

Swap the nutmeg

The recipe marks nutmeg as optional. How well each one fits the dish's main ingredients (egg, milk, sugar, lemon):

  1. Cinnamonfits better
  2. Nutmegthe original
  3. Dillfits less well
  4. Gingerfits less well

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