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Dessert

Irish Moss Jellj

A sweet, set dessert made from Irish moss, milk, sugar, cinnamon, and lemon rind.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Irish moss and cinnamon share more aroma than cooks usually use. They rank in the top 5% of all ingredient pairs, and cooks put them together in 14 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Irish Moss Jellj

Ingredients

Directions

Prepare the moss

  1. Wash freshly gathered Irish moss, removing dark pieces.

  2. Soak in cold water overnight.

  3. If bought, wash only, do not soak.

  4. Tie the moss in muslin with the cinnamon and lemon rind for flavoring.

Make the jelly

  1. Place the muslin-wrapped moss in a pan with milk and sugar.

  2. Cook gently until it sets when dropped on a plate.

  3. Squeeze the muslin well.

  4. Pour into a wetted mold.

  5. When cold, turn out.

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 + cinnamontop 5% of all pairs
    Smell alikestrong
    Cooked together14 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Cinnamon + lemontop 7% of all pairs
    Smell alikestrong
    Cooked together7,950 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

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

    Shared aroma: coumarin (sweet, hay).

  4. Milk + cinnamontop 10% of all pairs
    Smell alikemoderate
    Cooked together12,655 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

  5. Cinnamon + sugartop 10% of all pairs
    Smell alikelow
    Cooked together30,779 recipes

    Shared aroma: guaiacol (smoky, sweet).

Cinnamon and sugar barely smell alike, yet cooks put them together in 30,779 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 whose natural gelling agents thicken the milk as it cooks, setting it into a jelly.
Milk
Forms the body of the jelly, giving it a creamy base as the moss sets.
Sugar
Adds sweetness to the jelly.

The step that matters

Cook gently until it sets when dropped on a plate. Overheating or boiling too hard can weaken the gelling power of the moss and scorch the milk. A gentle heat lets the seaweed's gelling agents release slowly and set evenly, and the drop test shows when enough has been cooked.

Swap the lemon

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

  1. Vanillafits better
  2. Lemonthe original
  3. Peachfits about as well
  4. Raisinfits about as well

Fit is the average pairing score against irish moss, milk, cinnamon, 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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