“Cooking fish, although quick and simple, can be fraught. If overcooked it’s dry and mealy; oily fish such as mackerel are better just undercooked and indeed make a fine sashimi,” says Luke Burgess. “Shiso leaves can be found at Japanese grocers or could be swapped for another herb, such as parsley or rosemary.”
Char-grilled mackerel with plum glaze and shiso salt
Australian Gourmet Traveller recipe for char-grilled mackerel with plum glaze and shiso salt.