6 ounces uncooked soba (buckwheat noodles) |
cooking spray |
1 (1-pound) sushi-grade tuna steak |
1/2 teaspoon salt, divided |
1/4 teaspoon freshly ground black pepper |
1 cup finely chopped english cucumber |
1 cup shredded carrot |
1/2 cup julienne-cut radishes |
1/3 cup finely chopped red bell pepper |
1/4 cup finely chopped green onions |
3 tablespoons rice vinegar |
2 tablespoons low-sodium soy sauce |
1 tablespoon peanut oil |
1 1/2 teaspoons dark sesame oil |
1 teaspoon sugar |
1/2 teaspoon crushed red pepper |
2 tablespoons sesame seeds, toasted |