Place the wrapped fish in the freezer for approximately 10 minutes to help it firm up.
With a sharp knife, thinly slice the fish and place on two plates with the slices slightly overlapping each other.
Drizzle over the lemon juice and olive oil. Grate the lemon zest evenly over the top and the top with either small mint leaves or torn pieces of larger leaves. Decorate with a few microgreens then serve.
Video
Notes
Note quantities for all ingredients are approximate - adjust each to your taste.