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Dessert

Rock Candies

A hard candy made by boiling sugar and water with acetic acid, flavored liqueur, and almonds, then cooling and cutting into squares.

From an old cookbook · modernised transcription
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Why it works: Cherry and almond match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 672 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Rock Candies

Ingredients

Directions

Make the syrup

  1. Combine the sugar, water, and acetic acid in a saucepan over low heat and dissolve slowly.

  2. Wash the inside of the pan with a brush dipped in cold water, avoiding contact with the syrup.

  3. Gently move the pan closer to the heat and bring to a boil, continuing until the "crack" stage is reached.

Flavor and set

  1. Stir in the noeau and coloring.

  2. Bring to a boil again.

  3. Add the chopped almonds.

  4. Pour the mixture into a well-oiled shallow tin.

  5. Once cool, mark into squares.

  6. Break apart when completely cold.

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. Cherry + almondtop 4% of all pairs
    Smell alikestrong
    Cooked together672 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

  3. Sugar + cherrytop 20% of all pairs
    Smell alikelow
    Cooked together2,598 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

Sugar
Forms the crystal structure and sweetness of the candy as the syrup cools and hardens.
Acetic acid
Helps prevent the sugar from recrystallizing too coarsely, keeping the candy smoother.
Blanched almonds
Add crunch and nutty texture to the set candy.

The step that matters

Avoid contact with the syrup when washing the pan. Sugar crystals on the pan sides can fall into the boiling syrup and trigger unwanted crystallization, making the candy grainy instead of clear.

Swap the cherry

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

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

Fit is the average pairing score against sugar, 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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