Step 1

In a bowl, combine all of the ingredients and mix well to combine. Set aside.

Step 2

Arrange the sliced hamachi on a plate, being careful not to overlap slices. Coat the fish evenly with the Key lime juice. Spoon 6 tablespoons of the vinaigrette over the fish and season with salt, to taste. Top with the plantain threads evenly in a line down the center of the fish. Garnish with the shiso chiffonade.