It’s almost time to bake bread! In this six-part series called “Follow the Sourdough,” Chef John shows you how to make sourdough bread, from beginning to end. Last time, you learned how to feed your sourdough starter to make it strong and healthy. Today, we’re observing the tiny bubbles that form on the top of the starter when it's alive and well. For bread makers, this is scintillating viewing. Because, guess what? You’re almost ready to make bread! Did you miss the previous episode? Check out How to Feed Your Sourdough Starter. Ready to move on? See How to Make the Sponge for Homemade Bread. Or start at the beginning with How to Make San Francisco Sourdough Starter.