^ hah, it's a variety of dulse.
That used be commonly sold at the seaside in Ireland. I'm not sure how it was prepared - I think boiled and half-dried, but not sure. Chewy, tasted of the sea, but strong tasting too, often enough with the odd baby mussel attached :-)
I liked it.
Tried some packaged dried stuff lately, it wasn't the same (I didnt like it).