In order to prepare an authentic paella, there are seven essential ingredients: the paella pan, bomba rice (always), saffron, sofrito, extra-virgin olive oil, passion, and love.
Sofrito is an important part of the paella. It is a concentrate of vegetables that will bring flavor to the rice.
You can add 4 quartered small artichoke hearts, or roasted red peppers, cut into strips, with the rice. Some people use the pulp of 1 or 2 dried and soaked ñora peppers, instead of pimentón.