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Irish moss

Irish moss is food-grade red seaweed, commonly dried and rehydrated or processed into material used to thicken or set preparations.

Irish moss seaweed — illustrative ingredient image

About Irish moss

Irish moss is a red seaweed used as a food ingredient, traditionally dried and rehydrated or processed for its gelling material. The common name is applied to seaweed sold for food and does not by itself establish species or processing. It can be used to thicken or set preparations, while the dried seaweed itself has a marine flavour.

Dried Irish moss is typically sold as strands or pieces that need cleaning and soaking; processed extracts may instead appear as powder or gel. These forms are not interchangeable in recipes or composition. Nutrition comparisons should identify whether the entry is whole dried seaweed, rehydrated seaweed or an extracted product, because processing and water content substantially change what is measured.

Ingredient type
whole food

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Where irish moss appears

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Name examples awaiting language review. Confirm the specific food or product.

Local names for irish moss

Names and romanised forms to recognise on menus and labels.

English

Irish moss

English

sea moss

Available names only. Languages may be spoken in other countries; a name alone does not identify every ingredient in a dish.

Irish moss nutrition & diet

Irish moss nutritional value

Reference: Seaweed, irishmoss, raw

Per 100 g of 100 g edible portion in the named official reference form.

Calories
49kcal
Protein
1.5g
Carbs
12.3g
Fat
0.2g

Official national food-composition reference. The displayed food form is part of the estimate; cultivar, recipe, brand, processing and preparation can change values.

Dried, rehydrated and extracted forms differ in water content and composition; identify the form before comparing measured nutrition.

Dietary compatibility

  • Vegan
    Not established
  • Vegetarian
    Not established
  • Pescatarian
    Not established
  • Keto
    Not established
  • Paleo
    Not established
  • Low-carb
    Not established
  • Halal
    Not established
  • Kosher
    Not established
What these diet assessments mean
Vegan · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Vegetarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Pescatarian · Not established
The available profile does not establish the full composition or processing for this dietary pattern.
Keto · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Paleo · Not established
The ingredient form and processing have not been assessed against this dietary pattern.
Low-carb · Not established
A defined serving and sourced carbohydrate data are needed before assessing this dietary pattern.
Halal · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish halal status.
Kosher · Not established
Sourcing, processing and any applicable certification have not been verified. A food name alone does not establish kosher status.

For the plain ingredient · Awaiting review. Diet compatibility is not allergy suitability or halal/kosher certification. Keto and low-carb depend on the portion.

Reviewed ingredient entryIngredient reference · Preparations vary

AI-generated illustration for visual context. It does not identify a particular product or establish allergen content.

Sources & review

Nutrition reference: Canadian Nutrient File, 2015 — 2203 ↗. Values are scaled from 100 g of the recorded edible form. Individual portions have no assumed fixed weight.

Expanded overview, name examples and nutrition notes are database drafts awaiting editorial review. Numeric nutrition values, where shown, have their own source and food-form reference.

The ingredient description and dish connections come from the draft catalogue and may change after review.

Last recorded verification: .