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Preserve

Puffed Rice

A sweet snack made by boiling sugar, water, vinegar, molasses, butter, and salt, then mixing with puffed rice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Walnut and rice match in chemistry and in kitchens. They rank in the top 9% of all ingredient pairs, and cooks put them together in 430 recipes. Both carry 2,4-nonadienal, which smells fatty, green. The science ↓

Puffed Rice

Ingredients

Directions

Make the syrup

  1. Boil sugar, water, and vinegar for 5 minutes.

  2. Add molasses, butter, and salt; boil until a few drops in cold water become hard and brittle. Remove from heat.

Coat and cool

  1. Stir in warmed puffed rice and spread on a dish to cool.

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. Walnut + ricetop 9% of all pairs
    Smell alikestrong
    Cooked together430 recipes

    Shared aroma: 2,4-nonadienal (fatty, green).

  2. Sugar + molassestop 11% of all pairs
    Smell alikemoderate
    Cooked together9,225 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Walnut + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together6,832 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  4. Sugar + vinegartop 15% of all pairs
    Smell alikemoderate
    Cooked together20,806 recipes

    Shared aroma: beta-damascenone (apple, rose).

  5. Butter + ricetop 16% of all pairs
    Smell alikemoderate
    Cooked together9,645 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

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

What each ingredient does

Granulated sugar
Sweetness and structure, as the syrup cooks down and hardens into a brittle candy that holds the rice together.
Molasses
Adds deep flavor and dark color, and some extra sweetness to the syrup.
Vinegar
A little acid helps prevent the sugar from crystallizing, keeping the syrup smooth and clear.
Butter
Adds fat for a smoother bite and richer flavor in the finished candy.
Puffed rice
Provides the airy, crisp body that gives the finished candy its texture.

The step that matters

Boil the syrup until a drop hardens in cold water. The syrup must reach the hard, brittle stage. Undercooked syrup stays sticky and will not set, while overcooked syrup turns bitter and burnt, so checking with cold water matters.

Swap the walnut

How well each one fits the dish's main ingredients (sugar, vinegar, molasses, butter, rice):

  1. Almondfits better
  2. Sesamefits better
  3. Beansfits better
  4. Walnutthe original

Fit is the average pairing score against sugar, vinegar, molasses, butter, rice. 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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