Sinaloan Mackerel Ceviche Recipe

Ingredients (12)

• 1 pound (450 g) sushi-grade skinless Pacific sierra or mahi mahi fillets (see notes)
• 3 medium carrots (12 ounces; 340 g), peeled and finely grated on the small holes of a box grater
• 1 1/2 teaspoons plus 1/4 teaspoon Diamond Crystal kosher salt; for table salt use half as much by volume, divided
• 1 small red onion (6 ounces; 170 g); finely diced (3/4 cup)
• 2/3 cup (158 ml) fresh lime juice from about 6 whole Persian limes (see notes)
• Freshly ground black pepper
• 2 small garden cucumbers (12 ounces; 340 g), peeled, seeded, and cut into 1/4-inch dice
• 1/2 cup loosely packed finely chopped fresh cilantro leaves and tender stems (3/4 ounce; 22 g)
• Tostadas
• Mayonnaise
• Sliced avocado
• Salsa negra or hot sauce of your choice (common options include a fresh serrano salsa, Valentina or Salsa Huichol)