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Dessert

Orange Float

A chilled dessert of orange slices topped with a sweetened lemon‑cornstarch custard and whipped egg whites.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Lemon and orange match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Orange Float

Ingredients

Directions

Make the base

  1. Boil the water in a pot.

  2. Add the juice and pulp of the lemons and sugar; stir until dissolved.

  3. Once boiling, add the cornstarch and stir continuously for 15 minutes.

  4. Let the mixture cool.

Assemble and top

  1. Pour the cooled mixture over the sliced oranges.

  2. Beat the egg whites until stiff and spread over the top.

  3. Sweeten and add a few drops of vanilla extract.

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 + orangetop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

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

  2. Orange + vanillatop 6% of all pairs
    Smell alikemoderate
    Cooked together2,371 recipes

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

  3. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

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

  4. Lemon + vanillatop 15% of all pairs
    Smell alikemoderate
    Cooked together5,961 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  5. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Cornstarch
Thickens the liquid into a soft, sliceable set as it cooks and cools.
Egg whites
Whipped into a stiff foam that forms a light, airy topping over the float.
Sugar
Sweetens the lemon-water base and balances the sourness of the citrus.
Lemons
Juice and pulp add acidity and bright citrus flavour to the base.
Oranges
Sliced fruit forms the bottom layer and adds sweet citrus flavour and moisture.

The step that matters

Stir the cornstarch mixture continuously. Cornstarch can clump and scorch on the bottom of the pot if not stirred constantly while boiling. Constant stirring keeps it smooth as the starch gelatinises and thickens the liquid evenly.

Swap the lemon

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

  1. Figfits better
  2. Blueberryfits better
  3. Peachfits about as well
  4. Lemonthe original

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