Update: I used to think airlocks were optional for kimchi fermentation
I kept getting mold on my jars until a fermenter at the farmers market in Denver told me airlocks prevent oxygen from ruining the batch. After switching to a proper airlock setup, my kimchi has stayed crisp and mold-free for over 3 weeks. Anyone else skip this step at first?
My friend actually tried the vacuum sealing method after her second batch of kimchi went moldy. She swears by it now even though she felt SO dumb buying a sealer just for kimchi. Now she makes triple batches at once and it lasts MONTHS with no issues.