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Dessert

French Almond Rock

A candied almond confection made by boiling sugar, water, and cream of tartar, then coating almonds and setting in frames.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓

French Almond Rock

Ingredients

Directions

Make the sugar syrup

  1. Combine sugar, water, and cream of tartar in a pan.

  2. Boil until the mixture reaches the crack stage.

Prepare the almonds

  1. Blanch almonds by covering them with boiling water and stirring.

  2. Peel off the skins from the almonds.

  3. Dry the blanched almonds on a tray in front of a fire or in an oven.

Combine and set

  1. Add the almonds to the sugar mixture.

  2. Stir gently to prevent the almonds from sticking.

  3. Boil the mixture briefly.

  4. Pour the mixture into tin frames or onto a pouring plate.

  5. Stir in a little essence of lemon just before pouring.

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. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

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

  2. Almond + lemontop 10% of all pairs
    Smell alikestrong
    Cooked together5,655 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  3. Cream + almondtop 16% of all pairs
    Smell alikemoderate
    Cooked together5,130 recipes

    Shared aroma: 2-heptanol (bitter, floral).

  4. Sugar + almondtop 18% of all pairs
    Smell alikemoderate
    Cooked together15,679 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

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

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

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

White granulated sugar
Forms the brittle, glassy structure of the rock as the syrup cools and hardens.
Sweet almonds
Provide the crunchy texture and bulk that break up the hard sugar matrix.
Cream of tartar
Acidity that helps prevent the sugar from crystallising into a grainy texture.

The step that matters

Boil to the crack stage. The sugar concentration reached at the crack stage determines how hard the set almond rock becomes. Stopping early leaves it soft and sticky, while overcooking leads to a bitter, burnt taste.

Swap the lemon

The recipe marks lemon as optional. How well each one fits the dish's main ingredients (sugar, cream, almond):

  1. Vanillafits better
  2. Raisinfits better
  3. Figfits better
  4. Lemonthe original

Fit is the average pairing score against sugar, cream, almond. 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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