Rice And Dressing:

2⅓ cups short-grain brown rice
3½ cups water
2 teaspoons vegetable oil
Salt
6 tablespoons rice vinegar
6 tablespoons mirin
½ teaspoon sugar
3 tablespoons soy sauce
1 teaspoon grated fresh ginger
1 orange
1 lime

Vegetables And Tofu

28 ounces soft tofu
¾ cup cornstarch
¼ cup cornmeal
Salt
Pepper
2 tablespoons vegetable oil
6 radishes
1 avocado
1 cucumber
4 scallions , sliced thin
1 (8 by 7½-inch) sheet nori , crumbled (optional)