 Mastocarpus stellatus

Mastocarpus stellatus, also called Clúimhín Cait (cats' puff), carragheen, or false Irish moss, is a species of red algae closely related to Irish Moss, or "Chondrus crispus".It is collected in Ireland and Scotland, together with "Chondrus crispus" as Irish moss, dried, and sold for cooking and as the basis for a drink reputed to ward off colds and flu.