For starters, we cannot come to a consensus on what to call ourselves in English and how to spell it – Salvadorian, Salvadorean, or Salvadoran. If you’re writing an academic paper or news article, go with Salvadoran. It will make you sound proper and educated. The reality is that most people, including actual Salvadoran Americans, will use Salvadorian or Salvadorean—it just sounds natural to us. However, it is never and will never be El Salvadorian, El Salvadoran, or El Salvadorinian or you'll never be invited to the pupusería again and have to eat frozen Whole Foods pupusas over the sink alone for the rest of your life.