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Rhubarb Custard Pie

A pie with a rhubarb custard filling topped with meringue.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Rhubarb and nutmeg match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 177 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓

Rhubarb Custard Pie

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).

  2. In a bowl, combine chopped rhubarb, sugar, egg yolks, and nutmeg.

  3. Pour the mixture into a prepared pie crust.

  4. Dot the top with small flakes of butter.

Bake and top with meringue

  1. Bake until set.

  2. Whip the egg whites until stiff, then gradually add 1 tablespoon of sugar.

  3. Spread the meringue over the baked pie and brown it in the oven.

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. Rhubarb + nutmegtop 5% of all pairs
    Smell alikestrong
    Cooked together177 recipes

    Shared aroma: acetic acid (sour, vinegar).

  2. Nutmeg + buttertop 16% of all pairs
    Smell alikemoderate
    Cooked together24,377 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  3. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

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

    Shared aroma: acetic acid (sour, vinegar).

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

    Shared aroma: guaiacol (smoky, sweet).

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

Rhubarb
Provides the tart flavor and bulk that the custard is built around.
Egg yolks
Thicken the custard as they set during baking, giving it a smooth, sliceable body.
Sugar
Sweetens the custard and balances the tartness of the rhubarb.
Egg whites
Whipped with sugar to form a stable meringue that browns on top.

The step that matters

Bake until set. Egg yolks thicken as their proteins coagulate with heat. Underbaking leaves a runny custard, while overbaking can make it weep or curdle, so the pie should be checked for a set centre.

Swap the rhubarb

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

  1. Cinnamonfits better
  2. Allspicefits better
  3. Clovefits better
  4. Rhubarbthe original

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