Alaskan Lingcod Tostadas

Ingredients

• 1 head of garlic, separate cloves but do not peel
• 1/3 cup olive oil
• 2 tablespoons capers, drained and dried
• 1 tablespoon ancho chili powder
• 1 teaspoon balsamic vinegar
• 2 avocados, peeled and pitted
• 1/2 lime, juiced
• 1/2 teaspoon freshly ground black pepper
• 1/2 teaspoon oregano, rub between hands to release oil
• 1/2 teaspoon cumin, ground
• 1/2 red onion, minced
• 1/4 cup sour cream or greek yogurt
• 1 teaspoon Kosher salt
• 1/2 pound ling cod filets
• 1/2 bunch kale, washed, stocked and torn
• 4 limes, cut into wedges
• Sea salt for finishing
• 1 package of tostadas