Hi
I am not sure if it is the same type of seaweed ... but
Jersey Royal Potatoes ...which by that name can only be grown on the island of Jersey get in part, their 'special' taste due to the fact that the very sandy soil on Jersey is 'fertilised' annually with seaweed from the beaches
Jersey Royals are grown using a variety of potatoes called International Kidney ..which are commonly available
I am sure some of the fine dining chefs would be really pleased to have them available locally ...and so would I !!!
Best Regards
Mike Peterson