Irish moss is a type of red algae harvested from the Atlantic coastline of North America, Great Britain, Iceland, and, as the name suggests, Ireland.
Also known as carrageen moss, Irish moss is a rich source of protein and various minerals. Because Irish moss becomes jelly-like when boiled in liquids, it is used to thicken puddings and custards.
The flakes of dried Irish sea moss can also be sprinkled directly onto foods or into simmering soups and stews.
