How to Make It
Preheat the broiler and set a rack 4 inches from the heat. In a small bowl, blend the cream with the miso, ginger and scallion.
Arrange the sable slices on a large, rimmed baking sheet. Spread a scant 1/2 teaspoon of the miso cream on each sable slice. Broil the fish for 40 seconds, until browned in spots and glazed.
Arrange the rice crackers on a platter. Cut each slice of sable in half and place on a cracker. Garnish with sesame seeds and serve.