Choose how you want to cook the octopus boiled or roasted. Once it's roasted or boiled, cut the tentacles in slices.
Prepare the marinade by stirring all the ingredients and put in the octopus for 1 hour.
Boil the groats with ½ cup water until it dries.
Let the groats cool down before you make the salad. In a salad platter, spread the groats. Then, add the chopped tomatoes in the middle along with the peppers. Add the octopus, capers, chopped parsley and the leaves of the fresh oregano. Pour in the marinade.
Serve cold or hot.