Preheat oven to highest heat on grill setting.

Nori

Using tongs, toast each nori sheet over a medium flame on the stove top.  Crush the toasted nori into small flakes and set aside.

Miso Butter

Place butter, miso, soy sauce and vinegar in a bowl.  Beat until well combined.

Grill

Remove the meat from the shells and place them on an oven tray.  Add about 1/2 teaspoon of miso butter to each shell.  Place one scallop on the butter and add a second 1/2 teaspoon of miso butter on top.  Move the oven tray 2-3 cm under the grill.  Grill for 60-90 seconds, or until butter is golden brown and bubbling.  Remove scallops from the grill and transfer to a serving dish.

Serve

Add a squeeze of lemon juice and top with toasted nori and crushed sesame seeds.