2 pounds skinless mackerel fillets, roughly chopped
2 teaspoons salt
1 cup lime juice
5-6 medium carrots, roughly chopped
1 small red onions, roughly chopped
1 small cucumber, peeled and roughly chopped
1 serrano pepper, desseded, pith removed, roughly chopped
1 tablespoon fresh chopped oregano
Process the fish in a food processor on pulse mode for about 8-10 seconds or until just finely chopped. Transfer to a large flat bowl. Mix the salt and lemon juice and pour it over the fish. Let the fish marinate for at least 1 hour.
In the meantime process the carrots, onions, cucumber, Serrano pepper and oregano, again on pulse, until a very fine crumbled consistency is created. Once the fish has marinated for an hour toss the carrot mixture with the fish, mixing very well. Serve immediately.