A range of shellfish and edible seaweed, such as dulse and sloak was gathered from the rocky shoreline. A brown seaweed known as leathach, ‘wrack’ was cut from the rocks and then mixed in with boggy soil from the mountainside to form a homemade fertiliser for the potato crop. Seaweed was also dried in the sun and then burnt at a low heat in shallow pits. The ashes were known as Kelp and soda. Kelpwas sold to town merchants.