Whisk 3 tablespoons vegetable oil, 2 tablespoons rice vinegar, 4 teaspoons sesame oil, 3 teaspoons low-sodium soy sauce, 2 teaspoons honey and 1/2 teaspoon kosher salt in a large bowl. Chop 1 bunch kale, add to the bowl and toss to coat; let stand 10 minutes. Add 3/4 cup chopped roasted walnuts and 2 tablespoons black sesame seeds. Season with pepper.