Well, it’s slimy, brownish and you’re probably more used to seeing it covered in sand, because humble seaweed is rapidly blossoming into one of the country’s hottest cash crops. This boom is fuelled not only by its use as, well, fuel but by Ireland waking up to the global passion for sea vegetables as an ecologically friendly and supremely tasty alternative to conventional greenery. So, how can you profit from the edible seaweed revolution?