Is it possible to make sourdough starter without whole grain flour? I have glanced over the two recipes: https://www.kingarthurflour.com/recipes/sourdough-starter-recipe and https://www.theclevercarrot.com/2019/03/beginner-sourdough-starter-recipe/, and both call for whole grain. Is regular all purpose good enough?
Note: This will also be my first time ever making sourdough starter, so if it is much easier to succeed with whole grain, please let me know!