1. Peel and cut the shrimp in a “butterfly” cut (making a cut on the top, opening it completely).
2. Blend the peppers, lemons, cilantro and the water.
3. Marinate the shrimp in the mixture (for a minimum of 30 minutes) until they change color.
4. Julienne the onion (add to the shrimp) and grate the cucumber (spirals, grated or julienned).
5. Put a bed of cucumber and add the shrimp.

*Accompany with tostadas.