For the sauce:

Place all the ingredients in a blender and blend for 3 minutes.

Instructions:

1. Remove the shell from the shrimp and carefully clean along the back with a knife to remove the vein. Rinse under running water.

2. Separately, julienne the onion and cut the cucumber into half-moons, removing the seeds.

3. In a bowl, place the shrimp, squeeze the juice of 3 limes over them, season with salt and pepper, and add the julienned red onion and cucumber half-moons.

4. Once all the ingredients are in the bowl, add the black sauce (previously prepared), mix the ingredients, serve on a round plate, and garnish with avocado and cilantro.