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Dessert

Neapolitan Ice Cream

A frozen dessert made from cream, milk, sugar, eggs, flavoring, and optional gelatin.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Cream and gelatin match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,628 recipes. Both carry acetic acid, which smells sour, vinegar. The science ↓

Neapolitan Ice Cream

Ingredients

Directions

Make the custard

  1. Beat the eggs until creamy and add the salt.

  2. Cook the sugar in ½ cup of water for 5 minutes.

  3. Scald the milk and add the syrup.

  4. Pour the hot milk over the beaten eggs.

  5. Cook over boiling water until creamy but not curdled.

  6. For a smoother texture, dissolve 1 tablespoon of softened gelatin in the hot milk.

Finish and freeze

  1. When cool, add the cream and flavoring.

  2. Freeze.

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. Cream + gelatintop 7% of all pairs
    Smell alikestrong
    Cooked together1,628 recipes

    Shared aroma: acetic acid (sour, vinegar).

  2. Sugar + gelatintop 7% of all pairs
    Smell alikemoderate
    Cooked together2,778 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Cream + sugartop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

  4. Cream + milktop 18% of all pairs
    Smell alikemoderate
    Cooked together29,399 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

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

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

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Eggs
Thicken the custard base as they cook gently, giving it body and a creamy texture.
Sugar
Adds sweetness and, as a syrup, softens the frozen texture by lowering the freezing point.
Milk
Forms the liquid base of the custard that the eggs thicken.
Cream
Adds fat, which makes the frozen ice cream richer and smoother.
Gelatin
Stabilises the mixture and helps give a smoother, firmer texture.

The step that matters

Cook over boiling water until creamy but not curdled. Egg proteins thicken gently with heat, but overheating causes them to scramble and curdle, leaving a grainy custard that cannot be fixed by smoothing.

“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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