Fish Taco Platter

Ingredients

• 1 red onion (12 ounces halved lengthwise cut thinly crosswise)
• 5 whole jalapenos
• 2 cups seasoned rice vinegar
• 3 tbsps fresh lime juice
• 1 tbsp kosher salt (coarse)
• 12 cup mayonnaise
• 12 cup sour cream
• 2 tbsps fresh lime juice
• 1 tsp lime peel (packed finely grated)
• 1 pinch salt
• 12 ozs tomatillos (husked stemmed divided)
• 4 green onions (white and green parts separated)
• 1 jalapeno chile
• 2 garlic cloves (unpeeled)
• 1 14 cups cilantro leaves (packed fresh)
• 1 tbsp fresh lime juice
• 2 cups buttermilk
• 12 cup fresh cilantro (chopped)
• 3 tbsps hot pepper sauce
• 3 tsps kosher salt (coarse, divided)
• 1 tbsp fresh lime juice
• 2 lbs halibut (skinless, sea bass or striped bass fillets cut into 12 x 12 inch strips)
• 16 corn tortillas
• 2 cups self rising flour
• vegetable oil (frying)
• salsa (fresh)
• guacamole