I remember seeing them at the supermarket when I was a child but did not try them until recently.
As I live by the seaside, you can get fresh shellfish which you have with vinegar and salt and pepper.
Pickled cockles and mussels are great as snacks especially when you live in the city.
Tried the pickled cockles and mussels from Parsons and loved them especially the pickles.
The mussels were a bit mushy but still good.
I hope my local Sainsburys stocks some Laverbread by Parsons because it is dubbed as Welsh caviar!!!