Step 1
In a large saucepan, combine rice vinegar, sugar and salt; stir to dissolve the sugar. Add the rice and 1¾ cups water, and mix well. Bring to a boil over high heat, then cover and reduce heat to low. Cook until rice is tender and most of the liquid is absorbed, about 20 minutes.
Step 2
In a small bowl, toss salmon with ¼ teaspoon sesame oil and season with salt. Once rice is tender (after about 20 minutes), arrange salmon in an even layer on top of rice. Cover and steam over low heat until fish is cooked to medium, about 12 minutes longer.
Step 3
Meanwhile, in a small bowl, combine soy sauce, white vinegar, safflower oil, scallions, ginger and the remaining ¼ teaspoon sesame oil. Mix well, and season with salt.
Step 4
Scoop salmon and rice into bowls. Top each with some cucumbers, coleslaw mix and avocado. Drizzle with the vinaigrette. Top with nori, if using.
