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Dessert

Molasses Caistdy

A sweet confection made from molasses, sugar, and powdered soda, optionally with nuts.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Molasses and sugar are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 9,225 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓

Molasses Caistdy

Ingredients

Directions

Prepare

  1. Heat a kettle and butter it.

  2. Pour in the molasses and sugar.

Cook and finish

  1. Boil steadily for 20 minutes, stirring to prevent burning.

  2. Test by dropping a little in cold water; if it hardens immediately, it's done.

  3. If not, boil longer.

  4. Stir in the powdered soda before turning out.

  5. Optionally, add nut meats to the candy.

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. Molasses + sugartop 11% of all pairs
    Smell alikemoderate
    Cooked together9,225 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  2. Sugar + walnuttop 26% of all pairs
    Smell alikemoderate
    Cooked together7,147 recipes

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

  3. Molasses + walnuttop 30% of all pairs
    Smell alikelow
    Cooked together560 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

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

What each ingredient does

Molasses
Provides the bulk of the candy and its dark color and deep, bittersweet flavor.
Sugar
Adds sweetness and helps the mixture harden as it cooks down.
Powdered soda
Reacts with the hot syrup to lighten its texture and make the candy more tender.

The step that matters

Boiling until the cold-water test hardens. Molasses candy sets according to how far the sugar concentration has risen while boiling. Stirring prevents scorching on the bottom, and testing in cold water shows whether the syrup has cooked long enough to harden when cooled.

Swap the walnut

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

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

Fit is the average pairing score against molasses, sugar. 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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