What do I do if my starter won’t grow?
It happens sometimes. You use distilled water, you feed regularly, but you can’t seem to reach that ultra-bubbly critical mass. As long as it looks good, smells good and you’re seeing at least a few pea-sized bubbles every day, you’re probably on the right track. The way to kick a stubbornly slow starter-to-be in the proverbial can is to bump up the feeding schedule, at least for a few days. Instead of feeding it once, feed it twice, morning and night. Odds are after your second accelerated feeding you’ll see twice as many bubbles as the day before, and twice as many again the next day. Within 3-4 days you should at last have a full-strength starter.