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Dessert

Royal Ice Cream

A custard-based ice cream flavored with cinnamon, lemon rind, orange‑flower water, candied peel, and pistachios.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 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 ↓

Royal Ice Cream

Ingredients

Directions

Make the custard

  1. In a saucepan, whisk together the egg yolks, cinnamon, lemon rind, orange-flower water, and sugar.

  2. Add the thin cream and mix well.

  3. Heat the mixture over low heat, stirring constantly until it thickens but does not boil.

  4. Once cooled, strain the mixture through a fine sieve.

Freeze

  1. Before freezing, mix in the chopped candied fruits and pistachio nuts.

  2. Freeze according to your ice cream maker's instructions.

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. Pistachio + nutstop 1% of all pairs
    Smell alikestrong
    Cooked together425 recipes

    Shared aroma: alpha-pinene (pine, turpentine).

  3. Cinnamon + orangetop 3% of all pairs
    Smell alikestrong
    Cooked together3,437 recipes

    Shared aroma: guaiacol (smoky, sweet).

  4. Cinnamon + pistachiotop 5% of all pairs
    Smell alikestrong
    Cooked together201 recipes

    Shared aroma: alpha-pinene (pine, turpentine).

  5. Lemon + pistachiotop 6% of all pairs
    Smell alikestrong
    Cooked together431 recipes

    Shared aroma: alpha-pinene (pine, turpentine).

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

What each ingredient does

Egg yolks
Thicken the custard as they set on gentle heat and add richness.
Thin cream
Provides fat and body, giving the frozen ice cream a smooth, rich texture.
Sugar
Sweetens the base and lowers the freezing point, keeping the ice cream softer.
Candied citron, orange, and lemon peel
Adds chewy texture and concentrated citrus flavour throughout the ice cream.

The step that matters

Heating the custard over low heat. Egg yolks thicken through gentle heat, but if the mixture boils or heats too fast, the proteins scramble and the custard turns grainy. Constant stirring spreads heat evenly and prevents curdling at the base.

Swap the nuts

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

  1. Almondfits better
  2. Cashew nutfits better
  3. Chestnutfits better
  4. Nutsthe original

Fit is the average pairing score against egg, cinnamon, lemon, orange, sugar, cream, pistachio. 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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