How to prevent mould

Select only fresh fruits or vegetables. Remove ragged surfaces. The glass containers must be sealed tight with food wrap and covered with a lid after all ingredients are stacked-in. This will prevent pathogen or spores from contaminating the contents. Semi-dried surface will easily get mouldy. Shake the container slightly every one or two days to moisten the ingredients. Use a dry spoon to mix or scoop the contents if you need to do so. During fermentation, avoid storing containers in damp, stuffy places.