Skip to main content
Dessert

Prune Pie

A baked pie filled with prunes, sugar, lemon juice, butter, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
Jump to recipe ↓

Why it works: Butter and flour 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 ↓

Prune Pie

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the prunes

  1. Wash prunes and soak them in cold water overnight.

  2. Cook prunes in the same water until soft.

  3. Remove stones and cut prunes into quarters.

  4. Mix prunes with sugar, lemon juice, and reduced cooking liquid (1½ tablespoons).

Assemble and bake

  1. Line a pie plate with crust.

  2. Cover the crust with the prune mixture.

  3. Dot the mixture with butter.

  4. Sprinkle the mixture with flour.

  5. Add the upper crust.

  6. Bake at 350°F (175°C) until golden.

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 + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Lemon + buttertop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  4. Lemon + flourtop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

Butter and flour 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

Prunes
Provide the main filling, with sweetness and a soft, jammy texture when cooked.
Sugar
Adds sweetness and helps balance the tartness of the prunes.
Lemon juice
Adds acidity that brightens the flavour of the sweet prunes.
Flour
Thickens the cooking juices so the filling sets rather than running.
Butter
Adds richness and fat to the filling, improving flavour and mouthfeel.

The step that matters

Sprinkle the mixture with flour. Flour must be spread over the filling so it can thicken the cooking juices as the pie bakes; unevenly distributed flour can leave pockets of raw starch or a runny filling.

Swap the lemon

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

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

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

You might also like

Lemon CakeLemon Cake228 recipesLemon IceLemon Ice147 recipesLemon SherbetLemon Sherbet103 recipesLemon CustardLemon Custard64 recipes