Cedar Planked Halibut Tacos with Citrus Slaw

Bahan-bahan (6 porsi)

• One 15 x 6½-inch cedar plank
• 2 cups shredded Napa cabbage ((Chinese cabbage))
• ¼ cup chopped green onions
• ¼ cup light or regular sour cream
• 2 tablespoons freshly squeezed lime juice
• ½ teaspoon salt
• 2 teaspoons chili powder
• 1 teaspoon cumin
• ½ teaspoon freshly ground black pepper
• ¼ teaspoon salt
• 1½ pounds halibut fillet
• Twelve 8-inch flour or corn tortillas
• 1 large avocado, (sliced (for serving))
• 2 tablespoons chopped cilantro, ((for serving))