Name: Irish Moss
Ingredients: Irish moss; ½ to ⅔ cup hot milk

Why it works: Irish moss and milk work together. They rank in the top 19% of all ingredient pairs, and cooks put them together in 98 recipes. Both carry 2-methylbutyraldehyde, which smells malty, chocolate. The science ↓

Irish Moss

Ingredients

Irish moss
½ to ⅔ cup hot milk

Directions

Prepare the moss

Wash the Irish moss and soak it for several hours or overnight.
Boil the soaked moss for 10 minutes.
Strain the mixture through cheesecloth.

Finish the drink

Add ½ to ⅔ cup of hot milk.
Flavor as desired.

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.

Irish moss + milktop 19% of all pairs

Smell alikemoderate

Cooked together98 recipes

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

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

What each ingredient does

Irish moss: Releases gel-forming carrageenan when boiled, thickening the liquid into a smooth, drinkable body.
Milk: Adds creaminess, body and a mild dairy flavor to the thickened moss liquid.

“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.