The first thing you need to make the sourdough pancakes is the sourdough starter. You usually get this from a friend or neighbor, though there are ways to make it from scratch (some recipes even cheat and add lemon juice!
). But keep in mind that sourdough is a live culture and needs to be cared for constantly.
I found that after making sourdough pancakes from scratch for over 10 years, I liked Aunt Jamima even better, and it was a whole lot easier.