Botanical Source and Cultivation Palmaria palmata. North Atlantic dulse grown in the Dark Harbour, between 6 and 12 inches long, grows on rocks in the intertidal region and is harvest at low tide. An iridescent marine plant, dulse is harvested by hand and sun dried. It requires six hours of sunshine to dehydrate properly. Appearance, Aroma & Flavour Deep purple strips with a semi leather like texture. Flavour Profile: Dulse leaf has a soft, chewy texture and a Smoky, salty flavour. Common Uses Raw, roasted, fried or dried - yep, it's that versatile! Storage & Shelf Life Store airtight in a cool, dark pantry and dulse leaf will stay good for up to 2 years.