Make sure that the shrimp is already very clean, put them in a bowl, season with sea salt, ground cayenne pepper, baking soda and extra-virgin olive oil. Let shrimp marinate for a few minutes or up to half an hour.
When ready to cook, heat a pan over medium-high heat, add olive oil, be generous with it, depending on quantity of shrimp. Once oil is hot, add red chilli peppers, cook for about a minutes then add minced garlic, once it begins to brown, add the shrimp and the black olives.
Saute just until shrimp it turns pink, then add sherry wine vinegar, if using, otherwise a little water would do, too. Sprinkle parsley flakes or chopped fresh parsley..and it's done!
Squeeze a wedge of lemon before serving ( optional) Serve with toasted garlic bread or over pasta or rice. Enjoy!