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Dessert

Orange Sponge

A light gelatin-based sponge flavored with bitter and sweet orange juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Bitter orange and orange work together. They rank in the top 17% of all ingredient pairs, and cooks put them together in 23 recipes. Both carry acetal, which smells cream, earthy. The science ↓

Orange Sponge

Ingredients

Directions

Make the mixture

  1. Dissolve the gelatine in the cold water over gentle heat, ensuring it does not boil.

  2. Add the sugar to the dissolved gelatine and let it melt.

  3. Juice the bitter and sweet oranges and add the juice to the mixture.

  4. While cooling, separate the egg yolks from the whites and beat the whites until stiff.

  5. Quickly mix all ingredients together, whisking rapidly to prevent the gelatine from setting.

Set and serve

  1. Wet a delft mold and pour the mixture in.

  2. Allow it to firm up, then slip it onto a glass dish.

  3. Optionally, make a custard with the egg yolks to serve with the sponge.

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. Bitter orange + orangetop 17% of all pairs
    Smell alikelow
    Cooked together23 recipes

    Shared aroma: acetal (cream, earthy).

  2. Sugar + orangetop 20% of all pairs
    Smell alikelow
    Cooked together19,212 recipes

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

  3. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

  4. Orange + eggtop 31% of all pairs
    Smell alikelow
    Cooked together10,696 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  5. Bitter orange + eggtop 32% of all pairs
    Smell alikemoderate
    Cooked together5 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

Sugar and orange barely smell alike, yet cooks put them together in 19,212 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

Gelatine
Sets the liquid mixture into a firm, sliceable structure as it cools.
Eggs
Beaten whites trap air, giving the sponge its light, airy texture.
Lump sugar
Sweetens the mixture and balances the sharpness of the citrus juice.
Bitter oranges
Add sharp acidity and a strong aroma to the flavour.
Sweet oranges
Add juice that gives mild sweetness and fresh orange flavour.

The step that matters

Quickly mix all ingredients together, whisking rapidly to prevent the gelatine from setting.. Gelatine begins to set as it cools, so if the mixture firms before the whites are folded in, it cannot blend evenly and loses its airy texture. Whisking quickly keeps it fluid and spreads the air bubbles through it.

Swap the bitter orange

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

  1. Vanillafits better
  2. Lemonfits better
  3. Figfits better
  4. Bitter orangethe original

Fit is the average pairing score against sugar, orange, egg. 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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