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Dessert

Floating Islands

A dessert of meringue peaks set in custard, flavored with lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Milk and lemon are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 19,053 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Floating Islands

Ingredients

Directions

Make the custard

  1. Heat 3 pints of new milk in a double boiler over boiling water.

  2. Beat the egg yolks with sugar to taste until smooth.

  3. Pour the yolk mixture into the boiling milk.

  4. Season the custard with lemon.

Poach the meringue and serve

  1. Beat the egg whites until stiff peaks form.

  2. Drop spoonfuls of the egg whites into the milk.

  3. Cook the egg whites in the milk until set.

  4. Remove the set egg whites carefully and place them on a plate.

  5. Once cooled, place the cooked egg whites on top of the custard.

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. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

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

  2. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  3. Milk + eggtop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

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

  4. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

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

  5. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Egg whites
Whisked to stiff peaks, then poached, they form light, airy islands that hold their shape.
Milk
Forms the base of the custard, providing the liquid and body of the dish.
Egg yolks
Thicken the milk into a smooth custard as they set with gentle heat.
Sugar
Sweetens the custard to taste.

The step that matters

Cook the egg whites in the milk until set. Egg whites turn firm and opaque when heated, but high heat or a rolling boil can make them tough, rubbery or cause them to break apart. Gentle, steady heat keeps the islands tender and whole.

Swap the lemon

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

  1. Vanillafits better
  2. Figfits about as well
  3. Raisinfits about as well
  4. Lemonthe original

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