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Dessert

Cold Custard or Junket

A chilled milk custard thickened with rennet and sweetened with sugar.

From an old cookbook · modernised transcription
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Why it works: Milk and sherry are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 1,479 recipes. Both carry 2,3,5-trimethylpyrazine, which smells cocoa, roasted. The science ↓

Cold Custard or Junket

Ingredients

Directions

Make the junket

  1. Heat the milk to blood temperature, but do not boil.

  2. In a glass bowl, combine the rennet and sugar.

  3. Pour the warm milk into the bowl, stirring gently to mix.

  4. Grate nutmeg over the top and set in a cool place until firm.

Serve

  1. Serve very 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. Milk + sherrytop 14% of all pairs
    Smell alikemoderate
    Cooked together1,479 recipes

    Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).

  2. Milk + nutmegtop 15% of all pairs
    Smell alikemoderate
    Cooked together14,685 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  3. Nutmeg + sherrytop 17% of all pairs
    Smell alikemoderate
    Cooked together1,246 recipes

    Shared aroma: linalool (floral, citrus).

  4. Milk + sugartop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

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

  5. Sugar + nutmegtop 20% of all pairs
    Smell alikelow
    Cooked together23,364 recipes

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

Milk and sugar barely smell alike, yet cooks put them together in 77,875 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

New milk
Provides the protein-rich liquid that rennet turns into a soft, set curd.
Rennet
An enzyme that curdles the milk proteins, causing the mixture to set.
Sugar
Adds sweetness to the mild, delicate curd.

The step that matters

Warm the milk to blood temperature, not boiling. Rennet is an enzyme that works best at warm temperatures, and boiling heat can destroy its activity so the milk fails to set. Gentle stirring keeps the forming curd intact.

Swap the nutmeg

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

  1. Cinnamonfits better
  2. Nutmegthe original
  3. Gingerfits about as well
  4. Clovefits about as well

Fit is the average pairing score against milk, sugar, sherry. 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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