Hello Barb,

I didn't get a notification of the response, so just seeing this now. I actually had the starter stored in a jar that was sealed. It didn't happen when I put the starter in the fridge. Previously, I was feeding it twice a day and then moved to once a day. I took the starter out and again, the dry looking top occurred overnight. I took the top layer off and fed it. I also left the lid a tad loose. I'm not sure which part helped or both, but there was no dry looking layer on top today! Fingers crossed that it stays on this path.

I read that it could be yeast overgrowth if it's drying out on top, but I'm not sure as I could see bubbles in the dry layer, but perhaps the wrinkled effect comes over time.

Thank you for your advice!
Zoë

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