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Dessert

Vinegar Custard

A custard made with eggs, sugar, vinegar, butter, water, lemon, and baked in a pie crust.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Vinegar 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. Preheat the oven to 350°F (175°C).

Make the filling

  1. Beat the egg yolks with the sugar.

  2. Add the butter, hot water, lemon juice, and vinegar to the yolk mixture.

  3. Mix the flour with a little water until smooth, then add it to the other ingredients.

Bake and brown

  1. Pour the mixture into a pie crust and bake.

  2. Beat the egg whites with a little sugar, spread on top, and return to the oven to brown.

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

    Shared aroma: isobutyraldehyde (malty, green).

  2. Apple + lemontop 14% of all pairs
    Smell alikemoderate
    Cooked together7,551 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  3. Apple + buttertop 14% of all pairs
    Smell alikemoderate
    Cooked together8,706 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  5. Sugar + vinegartop 15% of all pairs
    Smell alikemoderate
    Cooked together20,806 recipes

    Shared aroma: beta-damascenone (apple, rose).

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
Yolks thicken the custard and whites form a meringue that browns on top.
Sugar
Sweetens the custard and helps stabilise the beaten egg whites.
Apple vinegar
Adds acidity that balances the sweetness of the custard.
Flour
Thickens the custard so it sets firm rather than runny.
Butter
Adds richness and a smooth, tender texture to the custard.

The step that matters

Return the meringue to the oven to brown. Egg whites need sugar and a short, watched bake to turn golden. Too little time leaves them pale, and too long dries or weeps them. Sugar dissolved into the whites helps them hold their shape while they colour.

Swap the apple

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

  1. Raisinfits better
  2. Vanillafits better
  3. Figfits better
  4. Applethe original

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