In this six-part series called “Follow the Sourdough,” Chef John shows you how to make sourdough bread, from beginning to end. In step one, you learned how to mix flour and warm water to make the sourdough starter. Today, it’s step two: how to feed the starter. It’s super easy. All you’re doing is removing some of the starter and then adding a more flour and water. Missed step one? Check out How to Make San Francisco Sourdough Starter. Ready to move on to step three? Find out How to Tell if Your Sourdough Starter is Alive & Well.