Sourdough Starter: Day 2 Moncton, NB, Canada / 91.9 The Bend Jeannie Mac Apr 17, 2020 | 1:10 PM It’s 24 hours since I mixed up a batch of sourdough starter, because yeast is apparently the second most hoarded item after toilet paper. Today, the starter has two bubbles. Apparently that means it’s working. Yay!