Crispy tostadas topped with fresh fish or shrimp cured in lime juice with tomatoes and cilantro. A healthy, protein-rich dish that brings the fresh flavors of Mexico's coast to your table.
Dice the white fish and shrimp into small pieces. Place them in a medium non-metallic bowl.
Pour the lime juice over the seafood, making sure all pieces are submerged. Cover and refrigerate for 30–40 minutes, stirring once halfway through. The seafood is ready when it turns opaque.
Drain the excess lime juice carefully, then combine seafood with diced tomatoes, chopped red onion, cilantro, and jalapeño in a mixing bowl.
Season the mixture with salt and black pepper. Gently fold in sliced avocado for creamy texture.
Arrange the tostada shells on plates. Spoon the ceviche mixture generously on top of each shell, spreading evenly. Serve immediately for maximum crispness.