Ceviche

1 pound shrimp, peeled and deveined
4 limes, juiced
4 roma tomatoes, seeded and diced
1/2 yellow onion, finely diced
1 cucumber, peeled, seeded, and diced
4 serrano peppers, seeded and minced
salt and pepper to taste
12 tostada shells
hot pepper sauce (optional)


Dice shrimp and place in a mixing bowl. Squeeze lime juice over shrimp until they are completely covered, about 4 limes. Stir in the tomatoes, onion, cucumber, serrano peppers, and salt and pepper. Cover, and refrigerate 1 hour.
When ready to serve, adjust seasoning with salt and pepper as needed. Serve on top of tostada shells with a splash of hot sauce, if desired.