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Dessert

Irish Moss Jelly

A gelatinous dessert made from Irish moss, water, lemon juice, wine, and sugar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Irish moss and lemon work together. They rank in the top 10% of all ingredient pairs, and cooks put them together in 61 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Irish Moss Jelly

Ingredients

Directions

Prepare the moss

  1. Wash the moss in five waters.

  2. Soak the moss in a little cold water for 1 hour.

Make the jelly

  1. Add the soaked moss to the boiling water.

  2. Simmer until fully dissolved.

  3. Sweeten to taste.

  4. Strain the mixture into molds.

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. Irish moss + lemontop 10% of all pairs
    Smell alikemoderate
    Cooked together61 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Lemon + winetop 13% of all pairs
    Smell alikelow
    Cooked together6,157 recipes

    Shared aroma: decanal (soap, orange peel).

  3. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  4. Irish moss + sugartop 24% of all pairs
    Smell alikemoderate
    Cooked together107 recipes

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

  5. Irish moss + winetop 26% of all pairs
    Smell alikelow
    Cooked together19 recipes

    Shared aroma: 2-methylbutyraldehyde (malty, chocolate).

Lemon and sugar 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

Irish moss
Seaweed that releases gelling compounds into water, setting the liquid into a jelly.
Lemon juice
Adds acidity that brightens the flavor and balances the sugar.
Wine
Adds flavor and aroma to the jelly.

The step that matters

Simmer until fully dissolved. The moss must dissolve completely so its gelling compounds spread evenly through the liquid. Undissolved pieces leave weak spots and a grainy texture once the jelly cools and sets.

Swap the lemon

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

  1. Vanillafits better
  2. Lemonthe original
  3. Peachfits less well
  4. Applefits less well

Fit is the average pairing score against irish moss, wine, 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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