Carrageen pudding

Carrageen pudding or carrageen moss pudding is a milk-based dessert akin to blancmange, eaten in coastal areas of Scotland and Ireland.
Chondrus crispus, or carrageen moss, a type of red algae widely found on the coasts of these countries, is added to boiled milk as a thickening agent and simmered until the mixture becomes gelatinous. The moss is a source of carrageenan. The pudding is often eaten with sugar and sometimes eggs, cream, lemon, vanilla or whisky.
Carrageen pudding is traditionally considered to have medicinal value, being given to people suffering from bronchitis.