What is the shelf life of the JOI Oat Milk Powder after I blend it? April 22, 2021 14:00 7 days when stored in an airtight container that’s refrigerated. Related articles What is the shelf life of the JOI Oat Milk Powder? Do I need a blender to make JOI Oat Milk? Does JOI need to be refrigerated? What is the correct way to read JOI's expiration date? How do I change my Credit Card Information? Comments 0 comments Please sign in to leave a comment.