Crunchy tostadas topped with raw shrimp cured in a fiery lime-chile aguachile sauce. This fresh, high protein coastal dish delivers an intense, clean flavor experience for adventurous diners.
Place raw shrimp on a cutting board and slice each into bite-size pieces for even curing.
Blend lime juice, serrano chiles, cilantro, salt, and pepper until thoroughly smooth; pour into a bowl.
Add shrimp and red onion to the bowl, stir well, and refrigerate for exactly 20 minutes to cure—do not over-marinate to preserve texture.
Arrange tostada shells on plates; layer them with sliced cucumber and avocado.
Spoon the aguachile-cured shrimp and onion mixture atop the vegetables, ensuring each tostada is evenly covered; serve immediately to retain crunch.