Quinoa Bowls with Seared Tuna

Name: Quinoa Bowls with Seared Tuna
Ingredients: 1 cup quinoa; 3 tablespoons plus 2 teaspoons vegetable oil; Kosher salt; 1/4 cup seasoned rice vinegar; 1 pound tuna steaks (3/4 to 1 inch thick); Freshly ground pepper; 2 tablespoons low-sodium soy sauce; 2 teaspoons toasted sesame oil; 1 cup shelled edamame, thawed; 1 zucchini, halved lengthwise and thinly sliced or shaved lengthwise into ribbons; 1 cup grape or cherry tomatoes, halved; 2 scallions, thinly sliced; Wasabi, pickled ginger and/or nori strips, for topping